Finding the Fourth Proportional to 8,493.59, 12,743.12 and 3,561.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,493.59 : 12,743.12 = 3,561.91 : x
2. Step 2: Convert to fraction form
   8,493.59/12,743.12 = 3,561.91/x
3. Step 3: Cross multiply
   8,493.59x = 12,743.12 × 3,561.91
4. Step 4: Simplify right side
   8,493.59x = 45,389,823.61
5. Step 5: Solve for x
   x = 45,389,823.61/8,493.59
6. Step 6: Final answer
   x = 5,344.01