Finding the Fourth Proportional to 9,498.96, 13,108.32 and 5,520.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,498.96 : 13,108.32 = 5,520.78 : x
2. Step 2: Convert to fraction form
   9,498.96/13,108.32 = 5,520.78/x
3. Step 3: Cross multiply
   9,498.96x = 13,108.32 × 5,520.78
4. Step 4: Simplify right side
   9,498.96x = 72,368,150.89
5. Step 5: Solve for x
   x = 72,368,150.89/9,498.96
6. Step 6: Final answer
   x = 7,618.53