Finding the Fourth Proportional to 12,711.72, 17,542.32 and 7,123.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,711.72 : 17,542.32 = 7,123.08 : x
2. Step 2: Convert to fraction form
   12,711.72/17,542.32 = 7,123.08/x
3. Step 3: Cross multiply
   12,711.72x = 17,542.32 × 7,123.08
4. Step 4: Simplify right side
   12,711.72x = 124,955,348.75
5. Step 5: Solve for x
   x = 124,955,348.75/12,711.72
6. Step 6: Final answer
   x = 9,829.93