Finding the Fourth Proportional to 23,056.27, 31,818.24 and 12,985.09

Step by Step Solution

1. Step 1: Write the proportion equation
   23,056.27 : 31,818.24 = 12,985.09 : x
2. Step 2: Convert to fraction form
   23,056.27/31,818.24 = 12,985.09/x
3. Step 3: Cross multiply
   23,056.27x = 31,818.24 × 12,985.09
4. Step 4: Simplify right side
   23,056.27x = 413,162,710.04
5. Step 5: Solve for x
   x = 413,162,710.04/23,056.27
6. Step 6: Final answer
   x = 17,919.76