Finding the Fourth Proportional to 12,747.65, 17,589.69 and 7,967.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,747.65 : 17,589.69 = 7,967.03 : x
2. Step 2: Convert to fraction form
   12,747.65/17,589.69 = 7,967.03/x
3. Step 3: Cross multiply
   12,747.65x = 17,589.69 × 7,967.03
4. Step 4: Simplify right side
   12,747.65x = 140,137,499.97
5. Step 5: Solve for x
   x = 140,137,499.97/12,747.65
6. Step 6: Final answer
   x = 10,993.21