Finding the Fourth Proportional to 21,630.50, 32,230.71 and 19,272.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,630.50 : 32,230.71 = 19,272.38 : x
2. Step 2: Convert to fraction form
   21,630.50/32,230.71 = 19,272.38/x
3. Step 3: Cross multiply
   21,630.50x = 32,230.71 × 19,272.38
4. Step 4: Simplify right side
   21,630.50x = 621,162,329.64
5. Step 5: Solve for x
   x = 621,162,329.64/21,630.50
6. Step 6: Final answer
   x = 28,716.97