Finding the Fourth Proportional to 8,209.30, 12,314.22 and 2,662.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,209.30 : 12,314.22 = 2,662.69 : x
2. Step 2: Convert to fraction form
   8,209.30/12,314.22 = 2,662.69/x
3. Step 3: Cross multiply
   8,209.30x = 12,314.22 × 2,662.69
4. Step 4: Simplify right side
   8,209.30x = 32,788,919.67
5. Step 5: Solve for x
   x = 32,788,919.67/8,209.30
6. Step 6: Final answer
   x = 3,994.12