Finding the Fourth Proportional to 8,162.56, 12,249.32 and 5,242.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,162.56 : 12,249.32 = 5,242.92 : x
2. Step 2: Convert to fraction form
   8,162.56/12,249.32 = 5,242.92/x
3. Step 3: Cross multiply
   8,162.56x = 12,249.32 × 5,242.92
4. Step 4: Simplify right side
   8,162.56x = 64,222,132.66
5. Step 5: Solve for x
   x = 64,222,132.66/8,162.56
6. Step 6: Final answer
   x = 7,867.89