Finding the Fourth Proportional to 12,266.86, 18,397.71 and 3,947.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,266.86 : 18,397.71 = 3,947.62 : x
2. Step 2: Convert to fraction form
   12,266.86/18,397.71 = 3,947.62/x
3. Step 3: Cross multiply
   12,266.86x = 18,397.71 × 3,947.62
4. Step 4: Simplify right side
   12,266.86x = 72,627,167.95
5. Step 5: Solve for x
   x = 72,627,167.95/12,266.86
6. Step 6: Final answer
   x = 5,920.60