Finding the Fourth Proportional to 21,761.50, 30,031.06 and 11,825.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,761.50 : 30,031.06 = 11,825.50 : x
2. Step 2: Convert to fraction form
   21,761.50/30,031.06 = 11,825.50/x
3. Step 3: Cross multiply
   21,761.50x = 30,031.06 × 11,825.50
4. Step 4: Simplify right side
   21,761.50x = 355,132,300.03
5. Step 5: Solve for x
   x = 355,132,300.03/21,761.50
6. Step 6: Final answer
   x = 16,319.29