Finding the Fourth Proportional to 16,705.27, 23,037.37 and 9,989.83

Step by Step Solution

1. Step 1: Write the proportion equation
   16,705.27 : 23,037.37 = 9,989.83 : x
2. Step 2: Convert to fraction form
   16,705.27/23,037.37 = 9,989.83/x
3. Step 3: Cross multiply
   16,705.27x = 23,037.37 × 9,989.83
4. Step 4: Simplify right side
   16,705.27x = 230,139,327.38
5. Step 5: Solve for x
   x = 230,139,327.38/16,705.27
6. Step 6: Final answer
   x = 13,776.45