Finding the Fourth Proportional to 12,085.18, 16,677.83 and 6,780.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,085.18 : 16,677.83 = 6,780.39 : x
2. Step 2: Convert to fraction form
   12,085.18/16,677.83 = 6,780.39/x
3. Step 3: Cross multiply
   12,085.18x = 16,677.83 × 6,780.39
4. Step 4: Simplify right side
   12,085.18x = 113,082,146.16
5. Step 5: Solve for x
   x = 113,082,146.16/12,085.18
6. Step 6: Final answer
   x = 9,357.09