Finding the Fourth Proportional to 9,127.31, 12,584.28 and 7,617.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,127.31 : 12,584.28 = 7,617.05 : x
2. Step 2: Convert to fraction form
   9,127.31/12,584.28 = 7,617.05/x
3. Step 3: Cross multiply
   9,127.31x = 12,584.28 × 7,617.05
4. Step 4: Simplify right side
   9,127.31x = 95,855,089.97
5. Step 5: Solve for x
   x = 95,855,089.97/9,127.31
6. Step 6: Final answer
   x = 10,502.01