Finding the Fourth Proportional to 5,771.50, 8,658.69 and 1,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,771.50 : 8,658.69 = 1,667.50 : x
2. Step 2: Convert to fraction form
   5,771.50/8,658.69 = 1,667.50/x
3. Step 3: Cross multiply
   5,771.50x = 8,658.69 × 1,667.50
4. Step 4: Simplify right side
   5,771.50x = 14,438,365.58
5. Step 5: Solve for x
   x = 14,438,365.58/5,771.50
6. Step 6: Final answer
   x = 2,501.67