Finding the Fourth Proportional to 8,117.34, 12,166.79 and 3,434.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,117.34 : 12,166.79 = 3,434.43 : x
2. Step 2: Convert to fraction form
   8,117.34/12,166.79 = 3,434.43/x
3. Step 3: Cross multiply
   8,117.34x = 12,166.79 × 3,434.43
4. Step 4: Simplify right side
   8,117.34x = 41,785,945.10
5. Step 5: Solve for x
   x = 41,785,945.10/8,117.34
6. Step 6: Final answer
   x = 5,147.74