Finding the Fourth Proportional to 36,397.49, 50,211.56 and 21,290.72

Step by Step Solution

1. Step 1: Write the proportion equation
   36,397.49 : 50,211.56 = 21,290.72 : x
2. Step 2: Convert to fraction form
   36,397.49/50,211.56 = 21,290.72/x
3. Step 3: Cross multiply
   36,397.49x = 50,211.56 × 21,290.72
4. Step 4: Simplify right side
   36,397.49x = 1,069,040,066.89
5. Step 5: Solve for x
   x = 1,069,040,066.89/36,397.49
6. Step 6: Final answer
   x = 29,371.26