Finding the Fourth Proportional to 8,215.98, 12,322.82 and 2,669.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,215.98 : 12,322.82 = 2,669.40 : x
2. Step 2: Convert to fraction form
   8,215.98/12,322.82 = 2,669.40/x
3. Step 3: Cross multiply
   8,215.98x = 12,322.82 × 2,669.40
4. Step 4: Simplify right side
   8,215.98x = 32,894,522.36
5. Step 5: Solve for x
   x = 32,894,522.36/8,215.98
6. Step 6: Final answer
   x = 4,003.72