Finding the Fourth Proportional to 16,680.18, 23,017.98 and 9,969.51

Step by Step Solution

1. Step 1: Write the proportion equation
   16,680.18 : 23,017.98 = 9,969.51 : x
2. Step 2: Convert to fraction form
   16,680.18/23,017.98 = 9,969.51/x
3. Step 3: Cross multiply
   16,680.18x = 23,017.98 × 9,969.51
4. Step 4: Simplify right side
   16,680.18x = 229,478,049.41
5. Step 5: Solve for x
   x = 229,478,049.41/16,680.18
6. Step 6: Final answer
   x = 13,757.53