Finding the Fourth Proportional to 47,682.81, 65,781.72 and 28,809

Step by Step Solution

1. Step 1: Write the proportion equation
   47,682.81 : 65,781.72 = 28,809 : x
2. Step 2: Convert to fraction form
   47,682.81/65,781.72 = 28,809/x
3. Step 3: Cross multiply
   47,682.81x = 65,781.72 × 28,809
4. Step 4: Simplify right side
   47,682.81x = 1,895,105,571.48
5. Step 5: Solve for x
   x = 1,895,105,571.48/47,682.81
6. Step 6: Final answer
   x = 39,744.00