Finding the Fourth Proportional to 8,713.69, 13,066.42 and 3,163.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,713.69 : 13,066.42 = 3,163.15 : x
2. Step 2: Convert to fraction form
   8,713.69/13,066.42 = 3,163.15/x
3. Step 3: Cross multiply
   8,713.69x = 13,066.42 × 3,163.15
4. Step 4: Simplify right side
   8,713.69x = 41,331,046.42
5. Step 5: Solve for x
   x = 41,331,046.42/8,713.69
6. Step 6: Final answer
   x = 4,743.23