Finding the Fourth Proportional to 12,111.15, 16,713.81 and 6,805.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.15 : 16,713.81 = 6,805.86 : x
2. Step 2: Convert to fraction form
   12,111.15/16,713.81 = 6,805.86/x
3. Step 3: Cross multiply
   12,111.15x = 16,713.81 × 6,805.86
4. Step 4: Simplify right side
   12,111.15x = 113,751,850.93
5. Step 5: Solve for x
   x = 113,751,850.93/12,111.15
6. Step 6: Final answer
   x = 9,392.32