Finding the Fourth Proportional to 8,491.56, 12,742.20 and 3,296.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,491.56 : 12,742.20 = 3,296.76 : x
2. Step 2: Convert to fraction form
   8,491.56/12,742.20 = 3,296.76/x
3. Step 3: Cross multiply
   8,491.56x = 12,742.20 × 3,296.76
4. Step 4: Simplify right side
   8,491.56x = 42,007,975.27
5. Step 5: Solve for x
   x = 42,007,975.27/8,491.56
6. Step 6: Final answer
   x = 4,947.03