Finding the Fourth Proportional to 5,581.65, 8,362.12 and 3,997.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,581.65 : 8,362.12 = 3,997.10 : x
2. Step 2: Convert to fraction form
   5,581.65/8,362.12 = 3,997.10/x
3. Step 3: Cross multiply
   5,581.65x = 8,362.12 × 3,997.10
4. Step 4: Simplify right side
   5,581.65x = 33,424,229.85
5. Step 5: Solve for x
   x = 33,424,229.85/5,581.65
6. Step 6: Final answer
   x = 5,988.23