Finding the Fourth Proportional to 16,976.69, 23,431.50 and 12,953.97

Step by Step Solution

1. Step 1: Write the proportion equation
   16,976.69 : 23,431.50 = 12,953.97 : x
2. Step 2: Convert to fraction form
   16,976.69/23,431.50 = 12,953.97/x
3. Step 3: Cross multiply
   16,976.69x = 23,431.50 × 12,953.97
4. Step 4: Simplify right side
   16,976.69x = 303,530,948.06
5. Step 5: Solve for x
   x = 303,530,948.06/16,976.69
6. Step 6: Final answer
   x = 17,879.28