Finding the Fourth Proportional to 23,123.10, 31,909.96 and 12,512.73

Step by Step Solution

1. Step 1: Write the proportion equation
   23,123.10 : 31,909.96 = 12,512.73 : x
2. Step 2: Convert to fraction form
   23,123.10/31,909.96 = 12,512.73/x
3. Step 3: Cross multiply
   23,123.10x = 31,909.96 × 12,512.73
4. Step 4: Simplify right side
   23,123.10x = 399,280,599.22
5. Step 5: Solve for x
   x = 399,280,599.22/23,123.10
6. Step 6: Final answer
   x = 17,267.61