Finding the Fourth Proportional to 9,478.40, 13,080.84 and 5,499.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,478.40 : 13,080.84 = 5,499.52 : x
2. Step 2: Convert to fraction form
   9,478.40/13,080.84 = 5,499.52/x
3. Step 3: Cross multiply
   9,478.40x = 13,080.84 × 5,499.52
4. Step 4: Simplify right side
   9,478.40x = 71,938,341.20
5. Step 5: Solve for x
   x = 71,938,341.20/9,478.40
6. Step 6: Final answer
   x = 7,589.71