Finding the Fourth Proportional to 8,105.58, 12,158.91 and 2,559.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.58 : 12,158.91 = 2,559.15 : x
2. Step 2: Convert to fraction form
   8,105.58/12,158.91 = 2,559.15/x
3. Step 3: Cross multiply
   8,105.58x = 12,158.91 × 2,559.15
4. Step 4: Simplify right side
   8,105.58x = 31,116,474.53
5. Step 5: Solve for x
   x = 31,116,474.53/8,105.58
6. Step 6: Final answer
   x = 3,838.90