Finding the Fourth Proportional to 12,411.24, 18,614.32 and 3,643.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,411.24 : 18,614.32 = 3,643.80 : x
2. Step 2: Convert to fraction form
   12,411.24/18,614.32 = 3,643.80/x
3. Step 3: Cross multiply
   12,411.24x = 18,614.32 × 3,643.80
4. Step 4: Simplify right side
   12,411.24x = 67,826,859.22
5. Step 5: Solve for x
   x = 67,826,859.22/12,411.24
6. Step 6: Final answer
   x = 5,464.95