Finding the Fourth Proportional to 23,139.75, 31,933.02 and 12,529.41

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139.75 : 31,933.02 = 12,529.41 : x
2. Step 2: Convert to fraction form
   23,139.75/31,933.02 = 12,529.41/x
3. Step 3: Cross multiply
   23,139.75x = 31,933.02 × 12,529.41
4. Step 4: Simplify right side
   23,139.75x = 400,101,900.12
5. Step 5: Solve for x
   x = 400,101,900.12/23,139.75
6. Step 6: Final answer
   x = 17,290.68