Finding the Fourth Proportional to 23,145.37, 31,940.54 and 12,535

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145.37 : 31,940.54 = 12,535 : x
2. Step 2: Convert to fraction form
   23,145.37/31,940.54 = 12,535/x
3. Step 3: Cross multiply
   23,145.37x = 31,940.54 × 12,535
4. Step 4: Simplify right side
   23,145.37x = 400,374,668.90
5. Step 5: Solve for x
   x = 400,374,668.90/23,145.37
6. Step 6: Final answer
   x = 17,298.26