Finding the Fourth Proportional to 23,054.27, 31,815.48 and 12,983.09

Step by Step Solution

1. Step 1: Write the proportion equation
   23,054.27 : 31,815.48 = 12,983.09 : x
2. Step 2: Convert to fraction form
   23,054.27/31,815.48 = 12,983.09/x
3. Step 3: Cross multiply
   23,054.27x = 31,815.48 × 12,983.09
4. Step 4: Simplify right side
   23,054.27x = 413,063,129.84
5. Step 5: Solve for x
   x = 413,063,129.84/23,054.27
6. Step 6: Final answer
   x = 17,916.99