Finding the Fourth Proportional to 8,115.50, 12,164.52 and 3,434.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,115.50 : 12,164.52 = 3,434.42 : x
2. Step 2: Convert to fraction form
   8,115.50/12,164.52 = 3,434.42/x
3. Step 3: Cross multiply
   8,115.50x = 12,164.52 × 3,434.42
4. Step 4: Simplify right side
   8,115.50x = 41,778,070.78
5. Step 5: Solve for x
   x = 41,778,070.78/8,115.50
6. Step 6: Final answer
   x = 5,147.94