Finding the Fourth Proportional to 23,173.72, 31,979.88 and 12,563.44

Step by Step Solution

1. Step 1: Write the proportion equation
   23,173.72 : 31,979.88 = 12,563.44 : x
2. Step 2: Convert to fraction form
   23,173.72/31,979.88 = 12,563.44/x
3. Step 3: Cross multiply
   23,173.72x = 31,979.88 × 12,563.44
4. Step 4: Simplify right side
   23,173.72x = 401,777,303.59
5. Step 5: Solve for x
   x = 401,777,303.59/23,173.72
6. Step 6: Final answer
   x = 17,337.63