4533,4523,4513,?

The pattern in the sequence appears to be that each number decreases by 10.

• From 4533 to 4523, the decrease is 10.
• From 4523 to 4513, the decrease is also 10.

Continuing this pattern, we subtract 10 from 4513:

4513 - 10 = 4503

Therefore, the next number in the sequence is 4503.