Finding the Fourth Proportional to 21,911.82, 30,252.15 and 16,866.54

Step by Step Solution

1. Step 1: Write the proportion equation
   21,911.82 : 30,252.15 = 16,866.54 : x
2. Step 2: Convert to fraction form
   21,911.82/30,252.15 = 16,866.54/x
3. Step 3: Cross multiply
   21,911.82x = 30,252.15 × 16,866.54
4. Step 4: Simplify right side
   21,911.82x = 510,249,098.06
5. Step 5: Solve for x
   x = 510,249,098.06/21,911.82
6. Step 6: Final answer
   x = 23,286.48