Finding the Fourth Proportional to 10,958.27, 16,439.83 and 5,111.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,958.27 : 16,439.83 = 5,111.69 : x
2. Step 2: Convert to fraction form
   10,958.27/16,439.83 = 5,111.69/x
3. Step 3: Cross multiply
   10,958.27x = 16,439.83 × 5,111.69
4. Step 4: Simplify right side
   10,958.27x = 84,035,219.63
5. Step 5: Solve for x
   x = 84,035,219.63/10,958.27
6. Step 6: Final answer
   x = 7,668.66