Finding the Fourth Proportional to 9,479.92, 13,080.96 and 5,501.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,479.92 : 13,080.96 = 5,501.20 : x
2. Step 2: Convert to fraction form
   9,479.92/13,080.96 = 5,501.20/x
3. Step 3: Cross multiply
   9,479.92x = 13,080.96 × 5,501.20
4. Step 4: Simplify right side
   9,479.92x = 71,960,977.15
5. Step 5: Solve for x
   x = 71,960,977.15/9,479.92
6. Step 6: Final answer
   x = 7,590.88