Finding the Fourth Proportional to 21,967.48, 30,315.54 and 12,031.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,967.48 : 30,315.54 = 12,031.48 : x
2. Step 2: Convert to fraction form
   21,967.48/30,315.54 = 12,031.48/x
3. Step 3: Cross multiply
   21,967.48x = 30,315.54 × 12,031.48
4. Step 4: Simplify right side
   21,967.48x = 364,740,813.20
5. Step 5: Solve for x
   x = 364,740,813.20/21,967.48
6. Step 6: Final answer
   x = 16,603.67