Finding the Fourth Proportional to 8,500.64, 12,756.36 and 3,306.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,500.64 : 12,756.36 = 3,306.56 : x
2. Step 2: Convert to fraction form
   8,500.64/12,756.36 = 3,306.56/x
3. Step 3: Cross multiply
   8,500.64x = 12,756.36 × 3,306.56
4. Step 4: Simplify right side
   8,500.64x = 42,179,669.72
5. Step 5: Solve for x
   x = 42,179,669.72/8,500.64
6. Step 6: Final answer
   x = 4,961.94