Finding the Fourth Proportional to 8,862.42, 12,218.78 and 7,263.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,862.42 : 12,218.78 = 7,263.18 : x
2. Step 2: Convert to fraction form
   8,862.42/12,218.78 = 7,263.18/x
3. Step 3: Cross multiply
   8,862.42x = 12,218.78 × 7,263.18
4. Step 4: Simplify right side
   8,862.42x = 88,747,198.52
5. Step 5: Solve for x
   x = 88,747,198.52/8,862.42
6. Step 6: Final answer
   x = 10,013.88