Finding the Fourth Proportional to 8,215.89, 12,322.48 and 2,293.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,215.89 : 12,322.48 = 2,293.18 : x
2. Step 2: Convert to fraction form
   8,215.89/12,322.48 = 2,293.18/x
3. Step 3: Cross multiply
   8,215.89x = 12,322.48 × 2,293.18
4. Step 4: Simplify right side
   8,215.89x = 28,257,664.69
5. Step 5: Solve for x
   x = 28,257,664.69/8,215.89
6. Step 6: Final answer
   x = 3,439.39