Finding the Fourth Proportional to 31,918.30, 47,873.82 and 12,196.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,918.30 : 47,873.82 = 12,196.42 : x
2. Step 2: Convert to fraction form
   31,918.30/47,873.82 = 12,196.42/x
3. Step 3: Cross multiply
   31,918.30x = 47,873.82 × 12,196.42
4. Step 4: Simplify right side
   31,918.30x = 583,889,215.72
5. Step 5: Solve for x
   x = 583,889,215.72/31,918.30
6. Step 6: Final answer
   x = 18,293.24