Finding the Fourth Proportional to 10,647.47, 15,976.69 and 5,726.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,647.47 : 15,976.69 = 5,726.72 : x
2. Step 2: Convert to fraction form
   10,647.47/15,976.69 = 5,726.72/x
3. Step 3: Cross multiply
   10,647.47x = 15,976.69 × 5,726.72
4. Step 4: Simplify right side
   10,647.47x = 91,494,055.78
5. Step 5: Solve for x
   x = 91,494,055.78/10,647.47
6. Step 6: Final answer
   x = 8,593.03