Finding the Fourth Proportional to 9,273.48, 12,787.22 and 7,144.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,273.48 : 12,787.22 = 7,144.38 : x
2. Step 2: Convert to fraction form
   9,273.48/12,787.22 = 7,144.38/x
3. Step 3: Cross multiply
   9,273.48x = 12,787.22 × 7,144.38
4. Step 4: Simplify right side
   9,273.48x = 91,356,758.82
5. Step 5: Solve for x
   x = 91,356,758.82/9,273.48
6. Step 6: Final answer
   x = 9,851.40