Finding the Fourth Proportional to 12,494.43, 17,243.15 and 7,190.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.43 : 17,243.15 = 7,190.55 : x
2. Step 2: Convert to fraction form
   12,494.43/17,243.15 = 7,190.55/x
3. Step 3: Cross multiply
   12,494.43x = 17,243.15 × 7,190.55
4. Step 4: Simplify right side
   12,494.43x = 123,987,696.28
5. Step 5: Solve for x
   x = 123,987,696.28/12,494.43
6. Step 6: Final answer
   x = 9,923.44