Finding the Fourth Proportional to 3,967.57, 5,475.17 and 2,199.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.57 : 5,475.17 = 2,199.16 : x
2. Step 2: Convert to fraction form
   3,967.57/5,475.17 = 2,199.16/x
3. Step 3: Cross multiply
   3,967.57x = 5,475.17 × 2,199.16
4. Step 4: Simplify right side
   3,967.57x = 12,040,763.86
5. Step 5: Solve for x
   x = 12,040,763.86/3,967.57
6. Step 6: Final answer
   x = 3,034.80