Finding the Fourth Proportional to 5,141.72, 7,711.24 and 1,443.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,141.72 : 7,711.24 = 1,443.80 : x
2. Step 2: Convert to fraction form
   5,141.72/7,711.24 = 1,443.80/x
3. Step 3: Cross multiply
   5,141.72x = 7,711.24 × 1,443.80
4. Step 4: Simplify right side
   5,141.72x = 11,133,488.31
5. Step 5: Solve for x
   x = 11,133,488.31/5,141.72
6. Step 6: Final answer
   x = 2,165.32