Finding the Fourth Proportional to 8,494.34, 12,728.53 and 3,561.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,494.34 : 12,728.53 = 3,561.29 : x
2. Step 2: Convert to fraction form
   8,494.34/12,728.53 = 3,561.29/x
3. Step 3: Cross multiply
   8,494.34x = 12,728.53 × 3,561.29
4. Step 4: Simplify right side
   8,494.34x = 45,329,968.80
5. Step 5: Solve for x
   x = 45,329,968.80/8,494.34
6. Step 6: Final answer
   x = 5,336.49