Find the median for the following set of numbers.

4, 18, 3, 29, 23

In order to find the median for any set of numbers, you must put the numbers in order from least to greatest. In this case, the order shall be: 3, 4, 18, 23, 29. Now, all you do is look at the number in the middle, which is 18. The median of this set of numbers is 18.