Finding the Fourth Proportional to 3,964.85, 5,470.94 and 2,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.85 : 5,470.94 = 2,196.56 : x
2. Step 2: Convert to fraction form
   3,964.85/5,470.94 = 2,196.56/x
3. Step 3: Cross multiply
   3,964.85x = 5,470.94 × 2,196.56
4. Step 4: Simplify right side
   3,964.85x = 12,017,236.98
5. Step 5: Solve for x
   x = 12,017,236.98/3,964.85
6. Step 6: Final answer
   x = 3,030.94