Finding the Fourth Proportional to 23,171.83, 31,977 and 12,561.44

Step by Step Solution

1. Step 1: Write the proportion equation
   23,171.83 : 31,977 = 12,561.44 : x
2. Step 2: Convert to fraction form
   23,171.83/31,977 = 12,561.44/x
3. Step 3: Cross multiply
   23,171.83x = 31,977 × 12,561.44
4. Step 4: Simplify right side
   23,171.83x = 401,677,007.00
5. Step 5: Solve for x
   x = 401,677,007.00/23,171.83
6. Step 6: Final answer
   x = 17,334.71