Finding the Fourth Proportional to 23,145.68, 31,941.12 and 12,535.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145.68 : 31,941.12 = 12,535.28 : x
2. Step 2: Convert to fraction form
   23,145.68/31,941.12 = 12,535.28/x
3. Step 3: Cross multiply
   23,145.68x = 31,941.12 × 12,535.28
4. Step 4: Simplify right side
   23,145.68x = 400,390,882.71
5. Step 5: Solve for x
   x = 400,390,882.71/23,145.68
6. Step 6: Final answer
   x = 17,298.73