Finding the Fourth Proportional to 10,814.82, 16,227.27 and 10,640.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,814.82 : 16,227.27 = 10,640.10 : x
2. Step 2: Convert to fraction form
   10,814.82/16,227.27 = 10,640.10/x
3. Step 3: Cross multiply
   10,814.82x = 16,227.27 × 10,640.10
4. Step 4: Simplify right side
   10,814.82x = 172,659,775.53
5. Step 5: Solve for x
   x = 172,659,775.53/10,814.82
6. Step 6: Final answer
   x = 15,965.11