Finding the Fourth Proportional to 8,104.76, 12,157.72 and 2,839.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,104.76 : 12,157.72 = 2,839.17 : x
2. Step 2: Convert to fraction form
   8,104.76/12,157.72 = 2,839.17/x
3. Step 3: Cross multiply
   8,104.76x = 12,157.72 × 2,839.17
4. Step 4: Simplify right side
   8,104.76x = 34,517,826.79
5. Step 5: Solve for x
   x = 34,517,826.79/8,104.76
6. Step 6: Final answer
   x = 4,258.96