Finding the Fourth Proportional to 6,578.88, 9,868.50 and 2,196.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,578.88 : 9,868.50 = 2,196.18 : x
2. Step 2: Convert to fraction form
   6,578.88/9,868.50 = 2,196.18/x
3. Step 3: Cross multiply
   6,578.88x = 9,868.50 × 2,196.18
4. Step 4: Simplify right side
   6,578.88x = 21,673,002.33
5. Step 5: Solve for x
   x = 21,673,002.33/6,578.88
6. Step 6: Final answer
   x = 3,294.33