Finding the Fourth Proportional to 3,965.23, 5,471.94 and 2,196.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.23 : 5,471.94 = 2,196.82 : x
2. Step 2: Convert to fraction form
   3,965.23/5,471.94 = 2,196.82/x
3. Step 3: Cross multiply
   3,965.23x = 5,471.94 × 2,196.82
4. Step 4: Simplify right side
   3,965.23x = 12,020,867.23
5. Step 5: Solve for x
   x = 12,020,867.23/3,965.23
6. Step 6: Final answer
   x = 3,031.57