Finding the Fourth Proportional to 12,406.79, 18,613.02 and 3,642.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,406.79 : 18,613.02 = 3,642.41 : x
2. Step 2: Convert to fraction form
   12,406.79/18,613.02 = 3,642.41/x
3. Step 3: Cross multiply
   12,406.79x = 18,613.02 × 3,642.41
4. Step 4: Simplify right side
   12,406.79x = 67,796,250.18
5. Step 5: Solve for x
   x = 67,796,250.18/12,406.79
6. Step 6: Final answer
   x = 5,464.45