Finding the Fourth Proportional to 10,926.96, 16,389.48 and 5,661.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,926.96 : 16,389.48 = 5,661.72 : x
2. Step 2: Convert to fraction form
   10,926.96/16,389.48 = 5,661.72/x
3. Step 3: Cross multiply
   10,926.96x = 16,389.48 × 5,661.72
4. Step 4: Simplify right side
   10,926.96x = 92,792,646.71
5. Step 5: Solve for x
   x = 92,792,646.71/10,926.96
6. Step 6: Final answer
   x = 8,492.08