Finding the Fourth Proportional to 8,493.26, 12,735.79 and 3,561.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,493.26 : 12,735.79 = 3,561.57 : x
2. Step 2: Convert to fraction form
   8,493.26/12,735.79 = 3,561.57/x
3. Step 3: Cross multiply
   8,493.26x = 12,735.79 × 3,561.57
4. Step 4: Simplify right side
   8,493.26x = 45,359,407.59
5. Step 5: Solve for x
   x = 45,359,407.59/8,493.26
6. Step 6: Final answer
   x = 5,340.64