Finding the Fourth Proportional to 12,264.71, 18,400.02 and 3,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,264.71 : 18,400.02 = 3,945.50 : x
2. Step 2: Convert to fraction form
   12,264.71/18,400.02 = 3,945.50/x
3. Step 3: Cross multiply
   12,264.71x = 18,400.02 × 3,945.50
4. Step 4: Simplify right side
   12,264.71x = 72,597,167.18
5. Step 5: Solve for x
   x = 72,597,167.18/12,264.71
6. Step 6: Final answer
   x = 5,919.19