Finding the Fourth Proportional to 3,964.82, 5,471.48 and 2,196.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.82 : 5,471.48 = 2,196.59 : x
2. Step 2: Convert to fraction form
   3,964.82/5,471.48 = 2,196.59/x
3. Step 3: Cross multiply
   3,964.82x = 5,471.48 × 2,196.59
4. Step 4: Simplify right side
   3,964.82x = 12,018,576.39
5. Step 5: Solve for x
   x = 12,018,576.39/3,964.82
6. Step 6: Final answer
   x = 3,031.31