Finding the Fourth Proportional to 3,964.72, 5,471.34 and 2,196.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.72 : 5,471.34 = 2,196.44 : x
2. Step 2: Convert to fraction form
   3,964.72/5,471.34 = 2,196.44/x
3. Step 3: Cross multiply
   3,964.72x = 5,471.34 × 2,196.44
4. Step 4: Simplify right side
   3,964.72x = 12,017,470.03
5. Step 5: Solve for x
   x = 12,017,470.03/3,964.72
6. Step 6: Final answer
   x = 3,031.10