Identify the missing numerator in the addition expression 13/24 + ?/24 = 1924 .

To find the missing numerator, we need to subtract the given numerator, 13, from the product of the denominator, 24, and the whole number, 1924.

1924 * 24 = 46176

46176 - 13 = 46163

Therefore, the missing numerator is 46163.