The estimated arrival time of the train in San Diego is 4:16 PM.
To find the arrival time, we must add the length of the trip to the starting time.
The trip is 4 hours and 26 minutes long, so we must add 4 hours, which is equivalent to 240 minutes, and 26 minutes to the starting time of 11:50 AM.
This results in a final time of 4:16 PM.