Finding the Fourth Proportional to 16,988.49, 23,443.31 and 9,435.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,988.49 : 23,443.31 = 9,435.30 : x
2. Step 2: Convert to fraction form
   16,988.49/23,443.31 = 9,435.30/x
3. Step 3: Cross multiply
   16,988.49x = 23,443.31 × 9,435.30
4. Step 4: Simplify right side
   16,988.49x = 221,194,662.84
5. Step 5: Solve for x
   x = 221,194,662.84/16,988.49
6. Step 6: Final answer
   x = 13,020.27