Finding the Fourth Proportional to 12,086.01, 16,678.75 and 6,780.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,086.01 : 16,678.75 = 6,780.86 : x
2. Step 2: Convert to fraction form
   12,086.01/16,678.75 = 6,780.86/x
3. Step 3: Cross multiply
   12,086.01x = 16,678.75 × 6,780.86
4. Step 4: Simplify right side
   12,086.01x = 113,096,293.47
5. Step 5: Solve for x
   x = 113,096,293.47/12,086.01
6. Step 6: Final answer
   x = 9,357.62