Finding the Fourth Proportional to 8,356.15, 12,536.25 and 3,425.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,356.15 : 12,536.25 = 3,425.68 : x
2. Step 2: Convert to fraction form
   8,356.15/12,536.25 = 3,425.68/x
3. Step 3: Cross multiply
   8,356.15x = 12,536.25 × 3,425.68
4. Step 4: Simplify right side
   8,356.15x = 42,945,180.90
5. Step 5: Solve for x
   x = 42,945,180.90/8,356.15
6. Step 6: Final answer
   x = 5,139.35