Finding the Fourth Proportional to 9,280.56, 12,807.48 and 5,088.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.56 : 12,807.48 = 5,088.81 : x
2. Step 2: Convert to fraction form
   9,280.56/12,807.48 = 5,088.81/x
3. Step 3: Cross multiply
   9,280.56x = 12,807.48 × 5,088.81
4. Step 4: Simplify right side
   9,280.56x = 65,174,832.30
5. Step 5: Solve for x
   x = 65,174,832.30/9,280.56
6. Step 6: Final answer
   x = 7,022.73