Finding the Fourth Proportional to 3,964.45, 5,470.98 and 2,196.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.45 : 5,470.98 = 2,196.08 : x
2. Step 2: Convert to fraction form
   3,964.45/5,470.98 = 2,196.08/x
3. Step 3: Cross multiply
   3,964.45x = 5,470.98 × 2,196.08
4. Step 4: Simplify right side
   3,964.45x = 12,014,709.76
5. Step 5: Solve for x
   x = 12,014,709.76/3,964.45
6. Step 6: Final answer
   x = 3,030.61