Finding the Fourth Proportional to 10,958.50, 16,439.37 and 5,111.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,958.50 : 16,439.37 = 5,111.92 : x
2. Step 2: Convert to fraction form
   10,958.50/16,439.37 = 5,111.92/x
3. Step 3: Cross multiply
   10,958.50x = 16,439.37 × 5,111.92
4. Step 4: Simplify right side
   10,958.50x = 84,036,744.29
5. Step 5: Solve for x
   x = 84,036,744.29/10,958.50
6. Step 6: Final answer
   x = 7,668.64