Finding the Fourth Proportional to 12,939.32, 17,855.27 and 7,273.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,939.32 : 17,855.27 = 7,273.16 : x
2. Step 2: Convert to fraction form
   12,939.32/17,855.27 = 7,273.16/x
3. Step 3: Cross multiply
   12,939.32x = 17,855.27 × 7,273.16
4. Step 4: Simplify right side
   12,939.32x = 129,864,289.28
5. Step 5: Solve for x
   x = 129,864,289.28/12,939.32
6. Step 6: Final answer
   x = 10,036.41