Finding the Fourth Proportional to 8,422.67, 12,618.18 and 7,044.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,422.67 : 12,618.18 = 7,044.86 : x
2. Step 2: Convert to fraction form
   8,422.67/12,618.18 = 7,044.86/x
3. Step 3: Cross multiply
   8,422.67x = 12,618.18 × 7,044.86
4. Step 4: Simplify right side
   8,422.67x = 88,893,311.55
5. Step 5: Solve for x
   x = 88,893,311.55/8,422.67
6. Step 6: Final answer
   x = 10,554.05