Finding the Fourth Proportional to 6,651.49, 9,978.41 and 2,209.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,651.49 : 9,978.41 = 2,209.42 : x
2. Step 2: Convert to fraction form
   6,651.49/9,978.41 = 2,209.42/x
3. Step 3: Cross multiply
   6,651.49x = 9,978.41 × 2,209.42
4. Step 4: Simplify right side
   6,651.49x = 22,046,498.62
5. Step 5: Solve for x
   x = 22,046,498.62/6,651.49
6. Step 6: Final answer
   x = 3,314.52