Finding the Fourth Proportional to 6,640.27, 9,959.27 and 2,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,640.27 : 9,959.27 = 2,196.56 : x
2. Step 2: Convert to fraction form
   6,640.27/9,959.27 = 2,196.56/x
3. Step 3: Cross multiply
   6,640.27x = 9,959.27 × 2,196.56
4. Step 4: Simplify right side
   6,640.27x = 21,876,148.03
5. Step 5: Solve for x
   x = 21,876,148.03/6,640.27
6. Step 6: Final answer
   x = 3,294.47