Finding the Fourth Proportional to 10,930.69, 16,399.49 and 3,910.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,930.69 : 16,399.49 = 3,910.54 : x
2. Step 2: Convert to fraction form
   10,930.69/16,399.49 = 3,910.54/x
3. Step 3: Cross multiply
   10,930.69x = 16,399.49 × 3,910.54
4. Step 4: Simplify right side
   10,930.69x = 64,130,920.86
5. Step 5: Solve for x
   x = 64,130,920.86/10,930.69
6. Step 6: Final answer
   x = 5,867.05