Finding the Fourth Proportional to 3,996.28, 5,989.29 and 3,501.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,996.28 : 5,989.29 = 3,501.55 : x
2. Step 2: Convert to fraction form
   3,996.28/5,989.29 = 3,501.55/x
3. Step 3: Cross multiply
   3,996.28x = 5,989.29 × 3,501.55
4. Step 4: Simplify right side
   3,996.28x = 20,971,798.40
5. Step 5: Solve for x
   x = 20,971,798.40/3,996.28
6. Step 6: Final answer
   x = 5,247.83