Finding the Fourth Proportional to 21,967.50, 30,315.24 and 12,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,967.50 : 30,315.24 = 12,031.50 : x
2. Step 2: Convert to fraction form
   21,967.50/30,315.24 = 12,031.50/x
3. Step 3: Cross multiply
   21,967.50x = 30,315.24 × 12,031.50
4. Step 4: Simplify right side
   21,967.50x = 364,737,810.06
5. Step 5: Solve for x
   x = 364,737,810.06/21,967.50
6. Step 6: Final answer
   x = 16,603.52