Finding the Fourth Proportional to 8,871.72, 13,306.38 and 5,574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,871.72 : 13,306.38 = 5,574.72 : x
2. Step 2: Convert to fraction form
   8,871.72/13,306.38 = 5,574.72/x
3. Step 3: Cross multiply
   8,871.72x = 13,306.38 × 5,574.72
4. Step 4: Simplify right side
   8,871.72x = 74,179,342.71
5. Step 5: Solve for x
   x = 74,179,342.71/8,871.72
6. Step 6: Final answer
   x = 8,361.33