Finding the Fourth Proportional to 4,447.28, 6,665.52 and 3,196.28

Step by Step Solution

1. Step 1: Write the proportion equation
   4,447.28 : 6,665.52 = 3,196.28 : x
2. Step 2: Convert to fraction form
   4,447.28/6,665.52 = 3,196.28/x
3. Step 3: Cross multiply
   4,447.28x = 6,665.52 × 3,196.28
4. Step 4: Simplify right side
   4,447.28x = 21,304,868.27
5. Step 5: Solve for x
   x = 21,304,868.27/4,447.28
6. Step 6: Final answer
   x = 4,790.54