Finding the Fourth Proportional to 6,667.86, 9,989.37 and 4,169.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,667.86 : 9,989.37 = 4,169.82 : x
2. Step 2: Convert to fraction form
   6,667.86/9,989.37 = 4,169.82/x
3. Step 3: Cross multiply
   6,667.86x = 9,989.37 × 4,169.82
4. Step 4: Simplify right side
   6,667.86x = 41,653,874.81
5. Step 5: Solve for x
   x = 41,653,874.81/6,667.86
6. Step 6: Final answer
   x = 6,246.96