Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
|  |  | Quarter Ended | Quarter Ended | Quarter Ended | Quarter Ended |
| --- | --- | --- | --- | --- | --- |
|  |  | March 31 | June 30 | September 30 | December 31 |
|  |  |  |  |  |  |
| Operating revenue |  | $9,032 | $10,777 | $11,003 | $10,491 |
| Income from operations |  | 276 | 1,161 | 1,203 | 652 |
| Net income |  | 147 | 684 | 836 | 462 |
| Basic earnings per share |  | 0.52 | 2.49 | 3.07 | 1.71 |
| Diluted earnings per share |  | 0.52 | 2.48 | 3.06 | 1.70 |
| 2017 (a) | Operating revenue | $8,426 | $10,008 | $9,899 | $9,451 |
| 2017 (a) | Income from operations | 320 | 1,437 | 1,138 | 776 |
| 2017 (a) | Net income | 99 | 821 | 645 | 579 |
| 2017 (a) | Basic earnings per share | 0.32 | 2.67 | 2.15 | 1.99 |
| 2017 (a) | Diluted earnings per share | 0.32 | 2.67 | 2.15 | 1.98 |
Question:
Find the operating revenue of Southwest for the fourth quarter of 2018.
Answer:
$10,491