Finding the Fourth Proportional to 12,711.77, 17,542.89 and 7,047.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,711.77 : 17,542.89 = 7,047.12 : x
2. Step 2: Convert to fraction form
   12,711.77/17,542.89 = 7,047.12/x
3. Step 3: Cross multiply
   12,711.77x = 17,542.89 × 7,047.12
4. Step 4: Simplify right side
   12,711.77x = 123,626,850.98
5. Step 5: Solve for x
   x = 123,626,850.98/12,711.77
6. Step 6: Final answer
   x = 9,725.38