Finding the Fourth Proportional to 23,123.09, 31,909.95 and 12,512.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,123.09 : 31,909.95 = 12,512.72 : x
2. Step 2: Convert to fraction form
   23,123.09/31,909.95 = 12,512.72/x
3. Step 3: Cross multiply
   23,123.09x = 31,909.95 × 12,512.72
4. Step 4: Simplify right side
   23,123.09x = 399,280,349.34
5. Step 5: Solve for x
   x = 399,280,349.34/23,123.09
6. Step 6: Final answer
   x = 17,267.60