Finding the Fourth Proportional to 8,356.63, 12,534.86 and 3,425.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,356.63 : 12,534.86 = 3,425.17 : x
2. Step 2: Convert to fraction form
   8,356.63/12,534.86 = 3,425.17/x
3. Step 3: Cross multiply
   8,356.63x = 12,534.86 × 3,425.17
4. Step 4: Simplify right side
   8,356.63x = 42,934,009.30
5. Step 5: Solve for x
   x = 42,934,009.30/8,356.63
6. Step 6: Final answer
   x = 5,137.72