Finding the Fourth Proportional to 23,065.94, 31,830.25 and 12,993.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,065.94 : 31,830.25 = 12,993.78 : x
2. Step 2: Convert to fraction form
   23,065.94/31,830.25 = 12,993.78/x
3. Step 3: Cross multiply
   23,065.94x = 31,830.25 × 12,993.78
4. Step 4: Simplify right side
   23,065.94x = 413,595,162.72
5. Step 5: Solve for x
   x = 413,595,162.72/23,065.94
6. Step 6: Final answer
   x = 17,930.99