Finding the Fourth Proportional to 5,109.28, 7,662.71 and 1,411.43

Step by Step Solution

1. Step 1: Write the proportion equation
   5,109.28 : 7,662.71 = 1,411.43 : x
2. Step 2: Convert to fraction form
   5,109.28/7,662.71 = 1,411.43/x
3. Step 3: Cross multiply
   5,109.28x = 7,662.71 × 1,411.43
4. Step 4: Simplify right side
   5,109.28x = 10,815,352.56
5. Step 5: Solve for x
   x = 10,815,352.56/5,109.28
6. Step 6: Final answer
   x = 2,116.81