Finding the Fourth Proportional to 9,280.88, 12,807.61 and 5,089.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.88 : 12,807.61 = 5,089.22 : x
2. Step 2: Convert to fraction form
   9,280.88/12,807.61 = 5,089.22/x
3. Step 3: Cross multiply
   9,280.88x = 12,807.61 × 5,089.22
4. Step 4: Simplify right side
   9,280.88x = 65,180,668.20
5. Step 5: Solve for x
   x = 65,180,668.20/9,280.88
6. Step 6: Final answer
   x = 7,023.12