Finding the Fourth Proportional to 10,939.50, 16,412.18 and 4,370.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,939.50 : 16,412.18 = 4,370.31 : x
2. Step 2: Convert to fraction form
   10,939.50/16,412.18 = 4,370.31/x
3. Step 3: Cross multiply
   10,939.50x = 16,412.18 × 4,370.31
4. Step 4: Simplify right side
   10,939.50x = 71,726,292.52
5. Step 5: Solve for x
   x = 71,726,292.52/10,939.50
6. Step 6: Final answer
   x = 6,556.63