Finding the Fourth Proportional to 21,229.82, 31,832.52 and 8,758.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,229.82 : 31,832.52 = 8,758.42 : x
2. Step 2: Convert to fraction form
   21,229.82/31,832.52 = 8,758.42/x
3. Step 3: Cross multiply
   21,229.82x = 31,832.52 × 8,758.42
4. Step 4: Simplify right side
   21,229.82x = 278,802,579.82
5. Step 5: Solve for x
   x = 278,802,579.82/21,229.82
6. Step 6: Final answer
   x = 13,132.59