Finding the Fourth Proportional to 3,964.59, 5,471.15 and 2,196.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.59 : 5,471.15 = 2,196.23 : x
2. Step 2: Convert to fraction form
   3,964.59/5,471.15 = 2,196.23/x
3. Step 3: Cross multiply
   3,964.59x = 5,471.15 × 2,196.23
4. Step 4: Simplify right side
   3,964.59x = 12,015,903.76
5. Step 5: Solve for x
   x = 12,015,903.76/3,964.59
6. Step 6: Final answer
   x = 3,030.81