Finding the Fourth Proportional to 16,185.28, 22,324.80 and 9,886.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,185.28 : 22,324.80 = 9,886.72 : x
2. Step 2: Convert to fraction form
   16,185.28/22,324.80 = 9,886.72/x
3. Step 3: Cross multiply
   16,185.28x = 22,324.80 × 9,886.72
4. Step 4: Simplify right side
   16,185.28x = 220,719,046.66
5. Step 5: Solve for x
   x = 220,719,046.66/16,185.28
6. Step 6: Final answer
   x = 13,637.02