Finding the Fourth Proportional to 16,680.09, 23,018.55 and 9,606.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,680.09 : 23,018.55 = 9,606.53 : x
2. Step 2: Convert to fraction form
   16,680.09/23,018.55 = 9,606.53/x
3. Step 3: Cross multiply
   16,680.09x = 23,018.55 × 9,606.53
4. Step 4: Simplify right side
   16,680.09x = 221,128,412.65
5. Step 5: Solve for x
   x = 221,128,412.65/16,680.09
6. Step 6: Final answer
   x = 13,257.02