Finding the Fourth Proportional to 23,050.80, 31,809.24 and 12,979.62

Step by Step Solution

1. Step 1: Write the proportion equation
   23,050.80 : 31,809.24 = 12,979.62 : x
2. Step 2: Convert to fraction form
   23,050.80/31,809.24 = 12,979.62/x
3. Step 3: Cross multiply
   23,050.80x = 31,809.24 × 12,979.62
4. Step 4: Simplify right side
   23,050.80x = 412,871,847.69
5. Step 5: Solve for x
   x = 412,871,847.69/23,050.80
6. Step 6: Final answer
   x = 17,911.39