Finding the Fourth Proportional to 23,139.39, 31,932.37 and 12,529.04

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139.39 : 31,932.37 = 12,529.04 : x
2. Step 2: Convert to fraction form
   23,139.39/31,932.37 = 12,529.04/x
3. Step 3: Cross multiply
   23,139.39x = 31,932.37 × 12,529.04
4. Step 4: Simplify right side
   23,139.39x = 400,081,781.36
5. Step 5: Solve for x
   x = 400,081,781.36/23,139.39
6. Step 6: Final answer
   x = 17,290.07