Finding the Fourth Proportional to 9,259.55, 12,776.15 and 5,480.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,259.55 : 12,776.15 = 5,480.83 : x
2. Step 2: Convert to fraction form
   9,259.55/12,776.15 = 5,480.83/x
3. Step 3: Cross multiply
   9,259.55x = 12,776.15 × 5,480.83
4. Step 4: Simplify right side
   9,259.55x = 70,023,814.92
5. Step 5: Solve for x
   x = 70,023,814.92/9,259.55
6. Step 6: Final answer
   x = 7,562.33