Finding the Fourth Proportional to 12,120.98, 16,727.33 and 6,816.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,120.98 : 16,727.33 = 6,816.09 : x
2. Step 2: Convert to fraction form
   12,120.98/16,727.33 = 6,816.09/x
3. Step 3: Cross multiply
   12,120.98x = 16,727.33 × 6,816.09
4. Step 4: Simplify right side
   12,120.98x = 114,015,003.78
5. Step 5: Solve for x
   x = 114,015,003.78/12,120.98
6. Step 6: Final answer
   x = 9,406.42