Finding the Fourth Proportional to 12,494.24, 17,243.28 and 7,189.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.24 : 17,243.28 = 7,189.28 : x
2. Step 2: Convert to fraction form
   12,494.24/17,243.28 = 7,189.28/x
3. Step 3: Cross multiply
   12,494.24x = 17,243.28 × 7,189.28
4. Step 4: Simplify right side
   12,494.24x = 123,966,768.04
5. Step 5: Solve for x
   x = 123,966,768.04/12,494.24
6. Step 6: Final answer
   x = 9,921.91