Finding the Fourth Proportional to 8,155.73, 12,233.86 and 2,891.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.73 : 12,233.86 = 2,891.55 : x
2. Step 2: Convert to fraction form
   8,155.73/12,233.86 = 2,891.55/x
3. Step 3: Cross multiply
   8,155.73x = 12,233.86 × 2,891.55
4. Step 4: Simplify right side
   8,155.73x = 35,374,856.53
5. Step 5: Solve for x
   x = 35,374,856.53/8,155.73
6. Step 6: Final answer
   x = 4,337.42