Finding the Fourth Proportional to 11,191.37, 16,786.71 and 2,871.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,191.37 : 16,786.71 = 2,871.05 : x
2. Step 2: Convert to fraction form
   11,191.37/16,786.71 = 2,871.05/x
3. Step 3: Cross multiply
   11,191.37x = 16,786.71 × 2,871.05
4. Step 4: Simplify right side
   11,191.37x = 48,195,399.81
5. Step 5: Solve for x
   x = 48,195,399.81/11,191.37
6. Step 6: Final answer
   x = 4,306.48