Finding the Fourth Proportional to 3,964.94, 5,471.56 and 2,196.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.94 : 5,471.56 = 2,196.53 : x
2. Step 2: Convert to fraction form
   3,964.94/5,471.56 = 2,196.53/x
3. Step 3: Cross multiply
   3,964.94x = 5,471.56 × 2,196.53
4. Step 4: Simplify right side
   3,964.94x = 12,018,453.87
5. Step 5: Solve for x
   x = 12,018,453.87/3,964.94
6. Step 6: Final answer
   x = 3,031.19