Finding the Fourth Proportional to 23,048.97, 31,810.61 and 12,979.38

Step by Step Solution

1. Step 1: Write the proportion equation
   23,048.97 : 31,810.61 = 12,979.38 : x
2. Step 2: Convert to fraction form
   23,048.97/31,810.61 = 12,979.38/x
3. Step 3: Cross multiply
   23,048.97x = 31,810.61 × 12,979.38
4. Step 4: Simplify right side
   23,048.97x = 412,881,930.32
5. Step 5: Solve for x
   x = 412,881,930.32/23,048.97
6. Step 6: Final answer
   x = 17,913.25