Finding the Fourth Proportional to 23,123.24, 31,910.16 and 12,512.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,123.24 : 31,910.16 = 12,512.88 : x
2. Step 2: Convert to fraction form
   23,123.24/31,910.16 = 12,512.88/x
3. Step 3: Cross multiply
   23,123.24x = 31,910.16 × 12,512.88
4. Step 4: Simplify right side
   23,123.24x = 399,288,002.86
5. Step 5: Solve for x
   x = 399,288,002.86/23,123.24
6. Step 6: Final answer
   x = 17,267.82