Finding the Fourth Proportional to 3,967.71, 5,475.24 and 2,199.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.71 : 5,475.24 = 2,199.30 : x
2. Step 2: Convert to fraction form
   3,967.71/5,475.24 = 2,199.30/x
3. Step 3: Cross multiply
   3,967.71x = 5,475.24 × 2,199.30
4. Step 4: Simplify right side
   3,967.71x = 12,041,695.33
5. Step 5: Solve for x
   x = 12,041,695.33/3,967.71
6. Step 6: Final answer
   x = 3,034.92