Finding the Fourth Proportional to 9,499.80, 13,106.82 and 5,520.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.80 : 13,106.82 = 5,520.15 : x
2. Step 2: Convert to fraction form
   9,499.80/13,106.82 = 5,520.15/x
3. Step 3: Cross multiply
   9,499.80x = 13,106.82 × 5,520.15
4. Step 4: Simplify right side
   9,499.80x = 72,351,612.42
5. Step 5: Solve for x
   x = 72,351,612.42/9,499.80
6. Step 6: Final answer
   x = 7,616.12