Finding the Fourth Proportional to 8,105.67, 12,158.50 and 2,559.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.67 : 12,158.50 = 2,559.57 : x
2. Step 2: Convert to fraction form
   8,105.67/12,158.50 = 2,559.57/x
3. Step 3: Cross multiply
   8,105.67x = 12,158.50 × 2,559.57
4. Step 4: Simplify right side
   8,105.67x = 31,120,531.85
5. Step 5: Solve for x
   x = 31,120,531.85/8,105.67
6. Step 6: Final answer
   x = 3,839.35