Finding the Fourth Proportional to 10,689.78, 14,751.83 and 5,910.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,689.78 : 14,751.83 = 5,910.05 : x
2. Step 2: Convert to fraction form
   10,689.78/14,751.83 = 5,910.05/x
3. Step 3: Cross multiply
   10,689.78x = 14,751.83 × 5,910.05
4. Step 4: Simplify right side
   10,689.78x = 87,183,949.58
5. Step 5: Solve for x
   x = 87,183,949.58/10,689.78
6. Step 6: Final answer
   x = 8,155.82