Finding the Fourth Proportional to 8,155.13, 12,234.52 and 2,608.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.13 : 12,234.52 = 2,608.81 : x
2. Step 2: Convert to fraction form
   8,155.13/12,234.52 = 2,608.81/x
3. Step 3: Cross multiply
   8,155.13x = 12,234.52 × 2,608.81
4. Step 4: Simplify right side
   8,155.13x = 31,917,503.46
5. Step 5: Solve for x
   x = 31,917,503.46/8,155.13
6. Step 6: Final answer
   x = 3,913.79