Finding the Fourth Proportional to 9,513.92, 13,128.42 and 5,480.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,513.92 : 13,128.42 = 5,480.54 : x
2. Step 2: Convert to fraction form
   9,513.92/13,128.42 = 5,480.54/x
3. Step 3: Cross multiply
   9,513.92x = 13,128.42 × 5,480.54
4. Step 4: Simplify right side
   9,513.92x = 71,950,830.95
5. Step 5: Solve for x
   x = 71,950,830.95/9,513.92
6. Step 6: Final answer
   x = 7,562.69