Finding the Fourth Proportional to 8,345.34, 12,515.88 and 3,414.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,345.34 : 12,515.88 = 3,414.06 : x
2. Step 2: Convert to fraction form
   8,345.34/12,515.88 = 3,414.06/x
3. Step 3: Cross multiply
   8,345.34x = 12,515.88 × 3,414.06
4. Step 4: Simplify right side
   8,345.34x = 42,729,965.27
5. Step 5: Solve for x
   x = 42,729,965.27/8,345.34
6. Step 6: Final answer
   x = 5,120.22