Finding the Fourth Proportional to 8,357.10, 12,535.67 and 3,425.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,357.10 : 12,535.67 = 3,425.86 : x
2. Step 2: Convert to fraction form
   8,357.10/12,535.67 = 3,425.86/x
3. Step 3: Cross multiply
   8,357.10x = 12,535.67 × 3,425.86
4. Step 4: Simplify right side
   8,357.10x = 42,945,450.43
5. Step 5: Solve for x
   x = 42,945,450.43/8,357.10
6. Step 6: Final answer
   x = 5,138.80