Finding the Fourth Proportional to 36,805.34, 50,791.61 and 20,890.05

Step by Step Solution

1. Step 1: Write the proportion equation
   36,805.34 : 50,791.61 = 20,890.05 : x
2. Step 2: Convert to fraction form
   36,805.34/50,791.61 = 20,890.05/x
3. Step 3: Cross multiply
   36,805.34x = 50,791.61 × 20,890.05
4. Step 4: Simplify right side
   36,805.34x = 1,061,039,272.48
5. Step 5: Solve for x
   x = 1,061,039,272.48/36,805.34
6. Step 6: Final answer
   x = 28,828.41