Finding the Fourth Proportional to 10,249.05, 14,142.65 and 5,772.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,249.05 : 14,142.65 = 5,772.09 : x
2. Step 2: Convert to fraction form
   10,249.05/14,142.65 = 5,772.09/x
3. Step 3: Cross multiply
   10,249.05x = 14,142.65 × 5,772.09
4. Step 4: Simplify right side
   10,249.05x = 81,632,619.78
5. Step 5: Solve for x
   x = 81,632,619.78/10,249.05
6. Step 6: Final answer
   x = 7,964.90