Finding the Fourth Proportional to 16,185.91, 22,331.34 and 9,815.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,185.91 : 22,331.34 = 9,815.06 : x
2. Step 2: Convert to fraction form
   16,185.91/22,331.34 = 9,815.06/x
3. Step 3: Cross multiply
   16,185.91x = 22,331.34 × 9,815.06
4. Step 4: Simplify right side
   16,185.91x = 219,183,330.32
5. Step 5: Solve for x
   x = 219,183,330.32/16,185.91
6. Step 6: Final answer
   x = 13,541.62