Finding the Fourth Proportional to 12,440.47, 18,660.89 and 4,441.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440.47 : 18,660.89 = 4,441.59 : x
2. Step 2: Convert to fraction form
   12,440.47/18,660.89 = 4,441.59/x
3. Step 3: Cross multiply
   12,440.47x = 18,660.89 × 4,441.59
4. Step 4: Simplify right side
   12,440.47x = 82,884,022.42
5. Step 5: Solve for x
   x = 82,884,022.42/12,440.47
6. Step 6: Final answer
   x = 6,662.45