Finding the Fourth Proportional to 3,965.23, 5,471.76 and 2,196.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.23 : 5,471.76 = 2,196.73 : x
2. Step 2: Convert to fraction form
   3,965.23/5,471.76 = 2,196.73/x
3. Step 3: Cross multiply
   3,965.23x = 5,471.76 × 2,196.73
4. Step 4: Simplify right side
   3,965.23x = 12,019,979.34
5. Step 5: Solve for x
   x = 12,019,979.34/3,965.23
6. Step 6: Final answer
   x = 3,031.34