Finding the Fourth Proportional to 23,123.10, 31,909.88 and 12,512.71

Step by Step Solution

1. Step 1: Write the proportion equation
   23,123.10 : 31,909.88 = 12,512.71 : x
2. Step 2: Convert to fraction form
   23,123.10/31,909.88 = 12,512.71/x
3. Step 3: Cross multiply
   23,123.10x = 31,909.88 × 12,512.71
4. Step 4: Simplify right side
   23,123.10x = 399,278,915.03
5. Step 5: Solve for x
   x = 399,278,915.03/23,123.10
6. Step 6: Final answer
   x = 17,267.53