Finding the Fourth Proportional to 31,900.92, 47,854.62 and 12,196.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900.92 : 47,854.62 = 12,196.05 : x
2. Step 2: Convert to fraction form
   31,900.92/47,854.62 = 12,196.05/x
3. Step 3: Cross multiply
   31,900.92x = 47,854.62 × 12,196.05
4. Step 4: Simplify right side
   31,900.92x = 583,637,338.25
5. Step 5: Solve for x
   x = 583,637,338.25/31,900.92
6. Step 6: Final answer
   x = 18,295.31