Finding the Fourth Proportional to 16,131.15, 22,266.09 and 9,419.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,131.15 : 22,266.09 = 9,419.49 : x
2. Step 2: Convert to fraction form
   16,131.15/22,266.09 = 9,419.49/x
3. Step 3: Cross multiply
   16,131.15x = 22,266.09 × 9,419.49
4. Step 4: Simplify right side
   16,131.15x = 209,735,212.09
5. Step 5: Solve for x
   x = 209,735,212.09/16,131.15
6. Step 6: Final answer
   x = 13,001.88