Finding the Fourth Proportional to 12,443.85, 18,662.53 and 4,124.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.85 : 18,662.53 = 4,124.61 : x
2. Step 2: Convert to fraction form
   12,443.85/18,662.53 = 4,124.61/x
3. Step 3: Cross multiply
   12,443.85x = 18,662.53 × 4,124.61
4. Step 4: Simplify right side
   12,443.85x = 76,975,657.86
5. Step 5: Solve for x
   x = 76,975,657.86/12,443.85
6. Step 6: Final answer
   x = 6,185.84