Finding the Fourth Proportional to 8,215.61, 12,324.53 and 2,667.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,215.61 : 12,324.53 = 2,667.16 : x
2. Step 2: Convert to fraction form
   8,215.61/12,324.53 = 2,667.16/x
3. Step 3: Cross multiply
   8,215.61x = 12,324.53 × 2,667.16
4. Step 4: Simplify right side
   8,215.61x = 32,871,418.48
5. Step 5: Solve for x
   x = 32,871,418.48/8,215.61
6. Step 6: Final answer
   x = 4,001.09