Finding the Fourth Proportional to 23,171.93, 31,977.50 and 12,561.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,171.93 : 31,977.50 = 12,561.54 : x
2. Step 2: Convert to fraction form
   23,171.93/31,977.50 = 12,561.54/x
3. Step 3: Cross multiply
   23,171.93x = 31,977.50 × 12,561.54
4. Step 4: Simplify right side
   23,171.93x = 401,686,582.54
5. Step 5: Solve for x
   x = 401,686,582.54/23,171.93
6. Step 6: Final answer
   x = 17,335.05