Finding the Fourth Proportional to 10,650.69, 15,974.82 and 9,086.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,650.69 : 15,974.82 = 9,086.99 : x
2. Step 2: Convert to fraction form
   10,650.69/15,974.82 = 9,086.99/x
3. Step 3: Cross multiply
   10,650.69x = 15,974.82 × 9,086.99
4. Step 4: Simplify right side
   10,650.69x = 145,162,949.72
5. Step 5: Solve for x
   x = 145,162,949.72/10,650.69
6. Step 6: Final answer
   x = 13,629.44