Finding the Fourth Proportional to 12,280.58, 18,414.32 and 4,381.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280.58 : 18,414.32 = 4,381.86 : x
2. Step 2: Convert to fraction form
   12,280.58/18,414.32 = 4,381.86/x
3. Step 3: Cross multiply
   12,280.58x = 18,414.32 × 4,381.86
4. Step 4: Simplify right side
   12,280.58x = 80,688,950.33
5. Step 5: Solve for x
   x = 80,688,950.33/12,280.58
6. Step 6: Final answer
   x = 6,570.45