Finding the Fourth Proportional to 8,085.48, 12,128.16 and 5,550.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,085.48 : 12,128.16 = 5,550.04 : x
2. Step 2: Convert to fraction form
   8,085.48/12,128.16 = 5,550.04/x
3. Step 3: Cross multiply
   8,085.48x = 12,128.16 × 5,550.04
4. Step 4: Simplify right side
   8,085.48x = 67,311,773.13
5. Step 5: Solve for x
   x = 67,311,773.13/8,085.48
6. Step 6: Final answer
   x = 8,325.02