Finding the Fourth Proportional to 8,504.52, 12,759.20 and 3,311.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,504.52 : 12,759.20 = 3,311.88 : x
2. Step 2: Convert to fraction form
   8,504.52/12,759.20 = 3,311.88/x
3. Step 3: Cross multiply
   8,504.52x = 12,759.20 × 3,311.88
4. Step 4: Simplify right side
   8,504.52x = 42,256,939.30
5. Step 5: Solve for x
   x = 42,256,939.30/8,504.52
6. Step 6: Final answer
   x = 4,968.76