Finding the Fourth Proportional to 39,976.50, 55,172.43 and 23,209.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,976.50 : 55,172.43 = 23,209.50 : x
2. Step 2: Convert to fraction form
   39,976.50/55,172.43 = 23,209.50/x
3. Step 3: Cross multiply
   39,976.50x = 55,172.43 × 23,209.50
4. Step 4: Simplify right side
   39,976.50x = 1,280,524,514.09
5. Step 5: Solve for x
   x = 1,280,524,514.09/39,976.50
6. Step 6: Final answer
   x = 32,031.93