Finding the Fourth Proportional to 8,118.72, 12,157.56 and 6,799.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,118.72 : 12,157.56 = 6,799.23 : x
2. Step 2: Convert to fraction form
   8,118.72/12,157.56 = 6,799.23/x
3. Step 3: Cross multiply
   8,118.72x = 12,157.56 × 6,799.23
4. Step 4: Simplify right side
   8,118.72x = 82,662,046.68
5. Step 5: Solve for x
   x = 82,662,046.68/8,118.72
6. Step 6: Final answer
   x = 10,181.66