Finding the Fourth Proportional to 12,085.38, 16,677.77 and 6,780.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,085.38 : 16,677.77 = 6,780.20 : x
2. Step 2: Convert to fraction form
   12,085.38/16,677.77 = 6,780.20/x
3. Step 3: Cross multiply
   12,085.38x = 16,677.77 × 6,780.20
4. Step 4: Simplify right side
   12,085.38x = 113,078,498.86
5. Step 5: Solve for x
   x = 113,078,498.86/12,085.38
6. Step 6: Final answer
   x = 9,356.64