Finding the Fourth Proportional to 9,520.20, 13,137.12 and 5,541.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,520.20 : 13,137.12 = 5,541.48 : x
2. Step 2: Convert to fraction form
   9,520.20/13,137.12 = 5,541.48/x
3. Step 3: Cross multiply
   9,520.20x = 13,137.12 × 5,541.48
4. Step 4: Simplify right side
   9,520.20x = 72,799,087.74
5. Step 5: Solve for x
   x = 72,799,087.74/9,520.20
6. Step 6: Final answer
   x = 7,646.80