Finding the Fourth Proportional to 12,613.50, 18,923.22 and 3,847.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.50 : 18,923.22 = 3,847.86 : x
2. Step 2: Convert to fraction form
   12,613.50/18,923.22 = 3,847.86/x
3. Step 3: Cross multiply
   12,613.50x = 18,923.22 × 3,847.86
4. Step 4: Simplify right side
   12,613.50x = 72,813,901.31
5. Step 5: Solve for x
   x = 72,813,901.31/12,613.50
6. Step 6: Final answer
   x = 5,772.70