Finding the Fourth Proportional to 11,439.11, 17,162.89 and 3,943.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,439.11 : 17,162.89 = 3,943.42 : x
2. Step 2: Convert to fraction form
   11,439.11/17,162.89 = 3,943.42/x
3. Step 3: Cross multiply
   11,439.11x = 17,162.89 × 3,943.42
4. Step 4: Simplify right side
   11,439.11x = 67,680,430.92
5. Step 5: Solve for x
   x = 67,680,430.92/11,439.11
6. Step 6: Final answer
   x = 5,916.58