Finding the Fourth Proportional to 8,221.52, 12,323.61 and 3,540.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,221.52 : 12,323.61 = 3,540.43 : x
2. Step 2: Convert to fraction form
   8,221.52/12,323.61 = 3,540.43/x
3. Step 3: Cross multiply
   8,221.52x = 12,323.61 × 3,540.43
4. Step 4: Simplify right side
   8,221.52x = 43,630,824.64
5. Step 5: Solve for x
   x = 43,630,824.64/8,221.52
6. Step 6: Final answer
   x = 5,306.91