Finding the Fourth Proportional to 22,640.82, 31,235.76 and 16,686.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,640.82 : 31,235.76 = 16,686.72 : x
2. Step 2: Convert to fraction form
   22,640.82/31,235.76 = 16,686.72/x
3. Step 3: Cross multiply
   22,640.82x = 31,235.76 × 16,686.72
4. Step 4: Simplify right side
   22,640.82x = 521,222,381.11
5. Step 5: Solve for x
   x = 521,222,381.11/22,640.82
6. Step 6: Final answer
   x = 23,021.36