Finding the Fourth Proportional to 16,745.73, 23,109.15 and 9,192.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,745.73 : 23,109.15 = 9,192.12 : x
2. Step 2: Convert to fraction form
   16,745.73/23,109.15 = 9,192.12/x
3. Step 3: Cross multiply
   16,745.73x = 23,109.15 × 9,192.12
4. Step 4: Simplify right side
   16,745.73x = 212,422,079.90
5. Step 5: Solve for x
   x = 212,422,079.90/16,745.73
6. Step 6: Final answer
   x = 12,685.15