Finding the Fourth Proportional to 16,387.89, 22,615.31 and 9,314.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,387.89 : 22,615.31 = 9,314.31 : x
2. Step 2: Convert to fraction form
   16,387.89/22,615.31 = 9,314.31/x
3. Step 3: Cross multiply
   16,387.89x = 22,615.31 × 9,314.31
4. Step 4: Simplify right side
   16,387.89x = 210,646,008.09
5. Step 5: Solve for x
   x = 210,646,008.09/16,387.89
6. Step 6: Final answer
   x = 12,853.76