Finding the Fourth Proportional to 9,018.26, 12,448.67 and 8,072.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,018.26 : 12,448.67 = 8,072.38 : x
2. Step 2: Convert to fraction form
   9,018.26/12,448.67 = 8,072.38/x
3. Step 3: Cross multiply
   9,018.26x = 12,448.67 × 8,072.38
4. Step 4: Simplify right side
   9,018.26x = 100,490,394.73
5. Step 5: Solve for x
   x = 100,490,394.73/9,018.26
6. Step 6: Final answer
   x = 11,142.99