Finding the Fourth Proportional to 36,687.50, 50,628.56 and 19,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   36,687.50 : 50,628.56 = 19,920.50 : x
2. Step 2: Convert to fraction form
   36,687.50/50,628.56 = 19,920.50/x
3. Step 3: Cross multiply
   36,687.50x = 50,628.56 × 19,920.50
4. Step 4: Simplify right side
   36,687.50x = 1,008,546,229.48
5. Step 5: Solve for x
   x = 1,008,546,229.48/36,687.50
6. Step 6: Final answer
   x = 27,490.19