Finding the Fourth Proportional to 16,673.94, 23,007.57 and 12,643.02

Step by Step Solution

1. Step 1: Write the proportion equation
   16,673.94 : 23,007.57 = 12,643.02 : x
2. Step 2: Convert to fraction form
   16,673.94/23,007.57 = 12,643.02/x
3. Step 3: Cross multiply
   16,673.94x = 23,007.57 × 12,643.02
4. Step 4: Simplify right side
   16,673.94x = 290,885,167.66
5. Step 5: Solve for x
   x = 290,885,167.66/16,673.94
6. Step 6: Final answer
   x = 17,445.50