Finding the Fourth Proportional to 36,456.05, 50,309.34 and 19,689.05

Step by Step Solution

1. Step 1: Write the proportion equation
   36,456.05 : 50,309.34 = 19,689.05 : x
2. Step 2: Convert to fraction form
   36,456.05/50,309.34 = 19,689.05/x
3. Step 3: Cross multiply
   36,456.05x = 50,309.34 × 19,689.05
4. Step 4: Simplify right side
   36,456.05x = 990,543,045.80
5. Step 5: Solve for x
   x = 990,543,045.80/36,456.05
6. Step 6: Final answer
   x = 27,170.88