Finding the Fourth Proportional to 12,750.03, 17,589.56 and 7,642.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,750.03 : 17,589.56 = 7,642.71 : x
2. Step 2: Convert to fraction form
   12,750.03/17,589.56 = 7,642.71/x
3. Step 3: Cross multiply
   12,750.03x = 17,589.56 × 7,642.71
4. Step 4: Simplify right side
   12,750.03x = 134,431,867.89
5. Step 5: Solve for x
   x = 134,431,867.89/12,750.03
6. Step 6: Final answer
   x = 10,543.65