Finding the Fourth Proportional to 9,363.40, 12,882.72 and 7,112.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,363.40 : 12,882.72 = 7,112.14 : x
2. Step 2: Convert to fraction form
   9,363.40/12,882.72 = 7,112.14/x
3. Step 3: Cross multiply
   9,363.40x = 12,882.72 × 7,112.14
4. Step 4: Simplify right side
   9,363.40x = 91,623,708.22
5. Step 5: Solve for x
   x = 91,623,708.22/9,363.40
6. Step 6: Final answer
   x = 9,785.30