Finding the Fourth Proportional to 3,964.83, 5,471.56 and 2,196.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.83 : 5,471.56 = 2,196.57 : x
2. Step 2: Convert to fraction form
   3,964.83/5,471.56 = 2,196.57/x
3. Step 3: Cross multiply
   3,964.83x = 5,471.56 × 2,196.57
4. Step 4: Simplify right side
   3,964.83x = 12,018,664.55
5. Step 5: Solve for x
   x = 12,018,664.55/3,964.83
6. Step 6: Final answer
   x = 3,031.32