Finding the Fourth Proportional to 8,105.33, 12,155.65 and 3,426.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.33 : 12,155.65 = 3,426.39 : x
2. Step 2: Convert to fraction form
   8,105.33/12,155.65 = 3,426.39/x
3. Step 3: Cross multiply
   8,105.33x = 12,155.65 × 3,426.39
4. Step 4: Simplify right side
   8,105.33x = 41,649,989.04
5. Step 5: Solve for x
   x = 41,649,989.04/8,105.33
6. Step 6: Final answer
   x = 5,138.59