Finding the Fourth Proportional to 3,962.72, 5,456.04 and 3,490.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,962.72 : 5,456.04 = 3,490.32 : x
2. Step 2: Convert to fraction form
   3,962.72/5,456.04 = 3,490.32/x
3. Step 3: Cross multiply
   3,962.72x = 5,456.04 × 3,490.32
4. Step 4: Simplify right side
   3,962.72x = 19,043,325.53
5. Step 5: Solve for x
   x = 19,043,325.53/3,962.72
6. Step 6: Final answer
   x = 4,805.62