Finding the Fourth Proportional to 12,760.88, 17,610.01 and 7,171.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,760.88 : 17,610.01 = 7,171.88 : x
2. Step 2: Convert to fraction form
   12,760.88/17,610.01 = 7,171.88/x
3. Step 3: Cross multiply
   12,760.88x = 17,610.01 × 7,171.88
4. Step 4: Simplify right side
   12,760.88x = 126,296,772.54
5. Step 5: Solve for x
   x = 126,296,772.54/12,760.88
6. Step 6: Final answer
   x = 9,897.19