Finding the Fourth Proportional to 21,296.04, 31,938.99 and 9,443.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,296.04 : 31,938.99 = 9,443.31 : x
2. Step 2: Convert to fraction form
   21,296.04/31,938.99 = 9,443.31/x
3. Step 3: Cross multiply
   21,296.04x = 31,938.99 × 9,443.31
4. Step 4: Simplify right side
   21,296.04x = 301,609,783.66
5. Step 5: Solve for x
   x = 301,609,783.66/21,296.04
6. Step 6: Final answer
   x = 14,162.72