Finding the Fourth Proportional to 5,446.62, 8,166.89 and 2,667.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,446.62 : 8,166.89 = 2,667.31 : x
2. Step 2: Convert to fraction form
   5,446.62/8,166.89 = 2,667.31/x
3. Step 3: Cross multiply
   5,446.62x = 8,166.89 × 2,667.31
4. Step 4: Simplify right side
   5,446.62x = 21,783,613.62
5. Step 5: Solve for x
   x = 21,783,613.62/5,446.62
6. Step 6: Final answer
   x = 3,999.47