Finding the Fourth Proportional to 9,499.68, 13,108.43 and 5,520.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.68 : 13,108.43 = 5,520.15 : x
2. Step 2: Convert to fraction form
   9,499.68/13,108.43 = 5,520.15/x
3. Step 3: Cross multiply
   9,499.68x = 13,108.43 × 5,520.15
4. Step 4: Simplify right side
   9,499.68x = 72,360,513.66
5. Step 5: Solve for x
   x = 72,360,513.66/9,499.68
6. Step 6: Final answer
   x = 7,617.15