Finding the Fourth Proportional to 21,760.83, 30,031.61 and 12,201.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,760.83 : 30,031.61 = 12,201.59 : x
2. Step 2: Convert to fraction form
   21,760.83/30,031.61 = 12,201.59/x
3. Step 3: Cross multiply
   21,760.83x = 30,031.61 × 12,201.59
4. Step 4: Simplify right side
   21,760.83x = 366,433,406.33
5. Step 5: Solve for x
   x = 366,433,406.33/21,760.83
6. Step 6: Final answer
   x = 16,839.13