Finding the Fourth Proportional to 23,145.59, 31,940.84 and 12,535.22

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145.59 : 31,940.84 = 12,535.22 : x
2. Step 2: Convert to fraction form
   23,145.59/31,940.84 = 12,535.22/x
3. Step 3: Cross multiply
   23,145.59x = 31,940.84 × 12,535.22
4. Step 4: Simplify right side
   23,145.59x = 400,385,456.38
5. Step 5: Solve for x
   x = 400,385,456.38/23,145.59
6. Step 6: Final answer
   x = 17,298.56