Finding the Fourth Proportional to 12,407.37, 18,611.16 and 3,642.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,407.37 : 18,611.16 = 3,642.43 : x
2. Step 2: Convert to fraction form
   12,407.37/18,611.16 = 3,642.43/x
3. Step 3: Cross multiply
   12,407.37x = 18,611.16 × 3,642.43
4. Step 4: Simplify right side
   12,407.37x = 67,789,847.52
5. Step 5: Solve for x
   x = 67,789,847.52/12,407.37
6. Step 6: Final answer
   x = 5,463.68