Finding the Fourth Proportional to 31,281.42, 46,917.15 and 10,221.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,281.42 : 46,917.15 = 10,221.27 : x
2. Step 2: Convert to fraction form
   31,281.42/46,917.15 = 10,221.27/x
3. Step 3: Cross multiply
   31,281.42x = 46,917.15 × 10,221.27
4. Step 4: Simplify right side
   31,281.42x = 479,552,857.78
5. Step 5: Solve for x
   x = 479,552,857.78/31,281.42
6. Step 6: Final answer
   x = 15,330.28