Finding the Fourth Proportional to 21,162.18, 31,757.85 and 9,488.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,162.18 : 31,757.85 = 9,488.46 : x
2. Step 2: Convert to fraction form
   21,162.18/31,757.85 = 9,488.46/x
3. Step 3: Cross multiply
   21,162.18x = 31,757.85 × 9,488.46
4. Step 4: Simplify right side
   21,162.18x = 301,333,089.41
5. Step 5: Solve for x
   x = 301,333,089.41/21,162.18
6. Step 6: Final answer
   x = 14,239.23