Finding the Fourth Proportional to 31,243.50, 46,865.31 and 12,775.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,243.50 : 46,865.31 = 12,775.50 : x
2. Step 2: Convert to fraction form
   31,243.50/46,865.31 = 12,775.50/x
3. Step 3: Cross multiply
   31,243.50x = 46,865.31 × 12,775.50
4. Step 4: Simplify right side
   31,243.50x = 598,727,767.91
5. Step 5: Solve for x
   x = 598,727,767.91/31,243.50
6. Step 6: Final answer
   x = 19,163.27