Finding the Fourth Proportional to 16,983.98, 23,436.81 and 9,430.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,983.98 : 23,436.81 = 9,430.31 : x
2. Step 2: Convert to fraction form
   16,983.98/23,436.81 = 9,430.31/x
3. Step 3: Cross multiply
   16,983.98x = 23,436.81 × 9,430.31
4. Step 4: Simplify right side
   16,983.98x = 221,016,266.53
5. Step 5: Solve for x
   x = 221,016,266.53/16,983.98
6. Step 6: Final answer
   x = 13,013.22