Finding the Fourth Proportional to 16,686.72, 23,046.57 and 11,372.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,686.72 : 23,046.57 = 11,372.31 : x
2. Step 2: Convert to fraction form
   16,686.72/23,046.57 = 11,372.31/x
3. Step 3: Cross multiply
   16,686.72x = 23,046.57 × 11,372.31
4. Step 4: Simplify right side
   16,686.72x = 262,092,738.48
5. Step 5: Solve for x
   x = 262,092,738.48/16,686.72
6. Step 6: Final answer
   x = 15,706.67