Finding the Fourth Proportional to 5,631.72, 8,441.71 and 2,119.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,631.72 : 8,441.71 = 2,119.31 : x
2. Step 2: Convert to fraction form
   5,631.72/8,441.71 = 2,119.31/x
3. Step 3: Cross multiply
   5,631.72x = 8,441.71 × 2,119.31
4. Step 4: Simplify right side
   5,631.72x = 17,890,600.42
5. Step 5: Solve for x
   x = 17,890,600.42/5,631.72
6. Step 6: Final answer
   x = 3,176.76