Finding the Fourth Proportional to 8,228.78, 12,340.61 and 2,755.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,228.78 : 12,340.61 = 2,755.50 : x
2. Step 2: Convert to fraction form
   8,228.78/12,340.61 = 2,755.50/x
3. Step 3: Cross multiply
   8,228.78x = 12,340.61 × 2,755.50
4. Step 4: Simplify right side
   8,228.78x = 34,004,550.86
5. Step 5: Solve for x
   x = 34,004,550.86/8,228.78
6. Step 6: Final answer
   x = 4,132.39