Finding the Fourth Proportional to 8,355.10, 12,532.67 and 3,423.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,355.10 : 12,532.67 = 3,423.86 : x
2. Step 2: Convert to fraction form
   8,355.10/12,532.67 = 3,423.86/x
3. Step 3: Cross multiply
   8,355.10x = 12,532.67 × 3,423.86
4. Step 4: Simplify right side
   8,355.10x = 42,910,027.72
5. Step 5: Solve for x
   x = 42,910,027.72/8,355.10
6. Step 6: Final answer
   x = 5,135.79