Finding the Fourth Proportional to 23,173.47, 31,979.61 and 12,563.13

Step by Step Solution

1. Step 1: Write the proportion equation
   23,173.47 : 31,979.61 = 12,563.13 : x
2. Step 2: Convert to fraction form
   23,173.47/31,979.61 = 12,563.13/x
3. Step 3: Cross multiply
   23,173.47x = 31,979.61 × 12,563.13
4. Step 4: Simplify right side
   23,173.47x = 401,763,997.78
5. Step 5: Solve for x
   x = 401,763,997.78/23,173.47
6. Step 6: Final answer
   x = 17,337.24