Finding the Fourth Proportional to 3,940.61, 5,432.94 and 3,229.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.61 : 5,432.94 = 3,229.83 : x
2. Step 2: Convert to fraction form
   3,940.61/5,432.94 = 3,229.83/x
3. Step 3: Cross multiply
   3,940.61x = 5,432.94 × 3,229.83
4. Step 4: Simplify right side
   3,940.61x = 17,547,472.60
5. Step 5: Solve for x
   x = 17,547,472.60/3,940.61
6. Step 6: Final answer
   x = 4,452.99