Finding the Fourth Proportional to 23,166.40, 31,969.62 and 12,556

Step by Step Solution

1. Step 1: Write the proportion equation
   23,166.40 : 31,969.62 = 12,556 : x
2. Step 2: Convert to fraction form
   23,166.40/31,969.62 = 12,556/x
3. Step 3: Cross multiply
   23,166.40x = 31,969.62 × 12,556
4. Step 4: Simplify right side
   23,166.40x = 401,410,548.72
5. Step 5: Solve for x
   x = 401,410,548.72/23,166.40
6. Step 6: Final answer
   x = 17,327.27