Finding the Fourth Proportional to 8,986.22, 12,402.08 and 5,449.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,986.22 : 12,402.08 = 5,449.42 : x
2. Step 2: Convert to fraction form
   8,986.22/12,402.08 = 5,449.42/x
3. Step 3: Cross multiply
   8,986.22x = 12,402.08 × 5,449.42
4. Step 4: Simplify right side
   8,986.22x = 67,584,142.79
5. Step 5: Solve for x
   x = 67,584,142.79/8,986.22
6. Step 6: Final answer
   x = 7,520.86