Finding the Fourth Proportional to 12,067.71, 16,652.59 and 6,690.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,067.71 : 16,652.59 = 6,690.09 : x
2. Step 2: Convert to fraction form
   12,067.71/16,652.59 = 6,690.09/x
3. Step 3: Cross multiply
   12,067.71x = 16,652.59 × 6,690.09
4. Step 4: Simplify right side
   12,067.71x = 111,407,325.83
5. Step 5: Solve for x
   x = 111,407,325.83/12,067.71
6. Step 6: Final answer
   x = 9,231.85