Finding the Fourth Proportional to 37,581.50, 51,864.09 and 20,814.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,581.50 : 51,864.09 = 20,814.50 : x
2. Step 2: Convert to fraction form
   37,581.50/51,864.09 = 20,814.50/x
3. Step 3: Cross multiply
   37,581.50x = 51,864.09 × 20,814.50
4. Step 4: Simplify right side
   37,581.50x = 1,079,525,101.31
5. Step 5: Solve for x
   x = 1,079,525,101.31/37,581.50
6. Step 6: Final answer
   x = 28,724.91