Finding the Fourth Proportional to 10,408.47, 15,611.69 and 5,726.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,408.47 : 15,611.69 = 5,726.94 : x
2. Step 2: Convert to fraction form
   10,408.47/15,611.69 = 5,726.94/x
3. Step 3: Cross multiply
   10,408.47x = 15,611.69 × 5,726.94
4. Step 4: Simplify right side
   10,408.47x = 89,407,183.29
5. Step 5: Solve for x
   x = 89,407,183.29/10,408.47
6. Step 6: Final answer
   x = 8,589.85