Finding the Fourth Proportional to 3,995.88, 5,962.56 and 3,580.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,995.88 : 5,962.56 = 3,580.80 : x
2. Step 2: Convert to fraction form
   3,995.88/5,962.56 = 3,580.80/x
3. Step 3: Cross multiply
   3,995.88x = 5,962.56 × 3,580.80
4. Step 4: Simplify right side
   3,995.88x = 21,350,734.85
5. Step 5: Solve for x
   x = 21,350,734.85/3,995.88
6. Step 6: Final answer
   x = 5,343.19