Finding the Fourth Proportional to 12,091.88, 16,686.72 and 6,786.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,091.88 : 16,686.72 = 6,786.68 : x
2. Step 2: Convert to fraction form
   12,091.88/16,686.72 = 6,786.68/x
3. Step 3: Cross multiply
   12,091.88x = 16,686.72 × 6,786.68
4. Step 4: Simplify right side
   12,091.88x = 113,247,428.89
5. Step 5: Solve for x
   x = 113,247,428.89/12,091.88
6. Step 6: Final answer
   x = 9,365.58