Finding the Fourth Proportional to 16,781.16, 23,162.67 and 9,615.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,781.16 : 23,162.67 = 9,615.09 : x
2. Step 2: Convert to fraction form
   16,781.16/23,162.67 = 9,615.09/x
3. Step 3: Cross multiply
   16,781.16x = 23,162.67 × 9,615.09
4. Step 4: Simplify right side
   16,781.16x = 222,711,156.69
5. Step 5: Solve for x
   x = 222,711,156.69/16,781.16
6. Step 6: Final answer
   x = 13,271.50