Finding the Fourth Proportional to 10,884.09, 16,318.42 and 5,616.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,884.09 : 16,318.42 = 5,616.87 : x
2. Step 2: Convert to fraction form
   10,884.09/16,318.42 = 5,616.87/x
3. Step 3: Cross multiply
   10,884.09x = 16,318.42 × 5,616.87
4. Step 4: Simplify right side
   10,884.09x = 91,658,443.75
5. Step 5: Solve for x
   x = 91,658,443.75/10,884.09
6. Step 6: Final answer
   x = 8,421.32