Finding the Fourth Proportional to 13,231.52, 19,850.32 and 3,871.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,231.52 : 19,850.32 = 3,871.31 : x
2. Step 2: Convert to fraction form
   13,231.52/19,850.32 = 3,871.31/x
3. Step 3: Cross multiply
   13,231.52x = 19,850.32 × 3,871.31
4. Step 4: Simplify right side
   13,231.52x = 76,846,737.79
5. Step 5: Solve for x
   x = 76,846,737.79/13,231.52
6. Step 6: Final answer
   x = 5,807.85