Finding the Fourth Proportional to 12,761.52, 17,610.88 and 7,172.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,761.52 : 17,610.88 = 7,172.52 : x
2. Step 2: Convert to fraction form
   12,761.52/17,610.88 = 7,172.52/x
3. Step 3: Cross multiply
   12,761.52x = 17,610.88 × 7,172.52
4. Step 4: Simplify right side
   12,761.52x = 126,314,389.02
5. Step 5: Solve for x
   x = 126,314,389.02/12,761.52
6. Step 6: Final answer
   x = 9,898.07