Finding the Fourth Proportional to 8,491.30, 12,741.90 and 3,560.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,491.30 : 12,741.90 = 3,560.56 : x
2. Step 2: Convert to fraction form
   8,491.30/12,741.90 = 3,560.56/x
3. Step 3: Cross multiply
   8,491.30x = 12,741.90 × 3,560.56
4. Step 4: Simplify right side
   8,491.30x = 45,368,299.46
5. Step 5: Solve for x
   x = 45,368,299.46/8,491.30
6. Step 6: Final answer
   x = 5,342.92