Finding the Fourth Proportional to 8,105.79, 12,158.44 and 3,361.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.79 : 12,158.44 = 3,361.47 : x
2. Step 2: Convert to fraction form
   8,105.79/12,158.44 = 3,361.47/x
3. Step 3: Cross multiply
   8,105.79x = 12,158.44 × 3,361.47
4. Step 4: Simplify right side
   8,105.79x = 40,870,153.71
5. Step 5: Solve for x
   x = 40,870,153.71/8,105.79
6. Step 6: Final answer
   x = 5,042.10