Finding the Fourth Proportional to 8,871.69, 13,310.61 and 3,944.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,871.69 : 13,310.61 = 3,944.79 : x
2. Step 2: Convert to fraction form
   8,871.69/13,310.61 = 3,944.79/x
3. Step 3: Cross multiply
   8,871.69x = 13,310.61 × 3,944.79
4. Step 4: Simplify right side
   8,871.69x = 52,507,561.22
5. Step 5: Solve for x
   x = 52,507,561.22/8,871.69
6. Step 6: Final answer
   x = 5,918.55