Finding the Fourth Proportional to 21,540.69, 32,297.81 and 8,377.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,540.69 : 32,297.81 = 8,377.72 : x
2. Step 2: Convert to fraction form
   21,540.69/32,297.81 = 8,377.72/x
3. Step 3: Cross multiply
   21,540.69x = 32,297.81 × 8,377.72
4. Step 4: Simplify right side
   21,540.69x = 270,582,008.79
5. Step 5: Solve for x
   x = 270,582,008.79/21,540.69
6. Step 6: Final answer
   x = 12,561.44