Finding the Fourth Proportional to 10,249.30, 14,144.72 and 5,712.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,249.30 : 14,144.72 = 5,712.68 : x
2. Step 2: Convert to fraction form
   10,249.30/14,144.72 = 5,712.68/x
3. Step 3: Cross multiply
   10,249.30x = 14,144.72 × 5,712.68
4. Step 4: Simplify right side
   10,249.30x = 80,804,259.05
5. Step 5: Solve for x
   x = 80,804,259.05/10,249.30
6. Step 6: Final answer
   x = 7,883.88