Finding the Fourth Proportional to 3,667.67, 5,487.84 and 2,187.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.67 : 5,487.84 = 2,187.69 : x
2. Step 2: Convert to fraction form
   3,667.67/5,487.84 = 2,187.69/x
3. Step 3: Cross multiply
   3,667.67x = 5,487.84 × 2,187.69
4. Step 4: Simplify right side
   3,667.67x = 12,005,681.75
5. Step 5: Solve for x
   x = 12,005,681.75/3,667.67
6. Step 6: Final answer
   x = 3,273.39