Finding the Fourth Proportional to 12,267.33, 18,399.76 and 3,947.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,267.33 : 18,399.76 = 3,947.61 : x
2. Step 2: Convert to fraction form
   12,267.33/18,399.76 = 3,947.61/x
3. Step 3: Cross multiply
   12,267.33x = 18,399.76 × 3,947.61
4. Step 4: Simplify right side
   12,267.33x = 72,635,076.57
5. Step 5: Solve for x
   x = 72,635,076.57/12,267.33
6. Step 6: Final answer
   x = 5,921.02