Finding the Fourth Proportional to 23,127.50, 31,915.89 and 12,517.13

Step by Step Solution

1. Step 1: Write the proportion equation
   23,127.50 : 31,915.89 = 12,517.13 : x
2. Step 2: Convert to fraction form
   23,127.50/31,915.89 = 12,517.13/x
3. Step 3: Cross multiply
   23,127.50x = 31,915.89 × 12,517.13
4. Step 4: Simplify right side
   23,127.50x = 399,495,344.20
5. Step 5: Solve for x
   x = 399,495,344.20/23,127.50
6. Step 6: Final answer
   x = 17,273.61