Finding the Fourth Proportional to 9,280.31, 12,807.14 and 5,088.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.31 : 12,807.14 = 5,088.56 : x
2. Step 2: Convert to fraction form
   9,280.31/12,807.14 = 5,088.56/x
3. Step 3: Cross multiply
   9,280.31x = 12,807.14 × 5,088.56
4. Step 4: Simplify right side
   9,280.31x = 65,169,906.89
5. Step 5: Solve for x
   x = 65,169,906.89/9,280.31
6. Step 6: Final answer
   x = 7,022.38