Finding the Fourth Proportional to 8,871.15, 12,243.65 and 5,336.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,871.15 : 12,243.65 = 5,336.31 : x
2. Step 2: Convert to fraction form
   8,871.15/12,243.65 = 5,336.31/x
3. Step 3: Cross multiply
   8,871.15x = 12,243.65 × 5,336.31
4. Step 4: Simplify right side
   8,871.15x = 65,335,885.25
5. Step 5: Solve for x
   x = 65,335,885.25/8,871.15
6. Step 6: Final answer
   x = 7,364.98