Finding the Fourth Proportional to 3,964.58, 5,470.91 and 2,196.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.58 : 5,470.91 = 2,196.08 : x
2. Step 2: Convert to fraction form
   3,964.58/5,470.91 = 2,196.08/x
3. Step 3: Cross multiply
   3,964.58x = 5,470.91 × 2,196.08
4. Step 4: Simplify right side
   3,964.58x = 12,014,546.45
5. Step 5: Solve for x
   x = 12,014,546.45/3,964.58
6. Step 6: Final answer
   x = 3,030.47