Finding the Fourth Proportional to 31,898.12, 47,815.94 and 11,892.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,898.12 : 47,815.94 = 11,892.96 : x
2. Step 2: Convert to fraction form
   31,898.12/47,815.94 = 11,892.96/x
3. Step 3: Cross multiply
   31,898.12x = 47,815.94 × 11,892.96
4. Step 4: Simplify right side
   31,898.12x = 568,673,061.78
5. Step 5: Solve for x
   x = 568,673,061.78/31,898.12
6. Step 6: Final answer
   x = 17,827.79