Finding the Fourth Proportional to 23,145.72, 31,941.18 and 12,535.36

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145.72 : 31,941.18 = 12,535.36 : x
2. Step 2: Convert to fraction form
   23,145.72/31,941.18 = 12,535.36/x
3. Step 3: Cross multiply
   23,145.72x = 31,941.18 × 12,535.36
4. Step 4: Simplify right side
   23,145.72x = 400,394,190.12
5. Step 5: Solve for x
   x = 400,394,190.12/23,145.72
6. Step 6: Final answer
   x = 17,298.84