Finding the Fourth Proportional to 8,775.92, 12,111.84 and 5,550.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,775.92 : 12,111.84 = 5,550.47 : x
2. Step 2: Convert to fraction form
   8,775.92/12,111.84 = 5,550.47/x
3. Step 3: Cross multiply
   8,775.92x = 12,111.84 × 5,550.47
4. Step 4: Simplify right side
   8,775.92x = 67,226,344.01
5. Step 5: Solve for x
   x = 67,226,344.01/8,775.92
6. Step 6: Final answer
   x = 7,660.32