Finding the Fourth Proportional to 21,753.38, 30,018.66 and 12,322.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,753.38 : 30,018.66 = 12,322.02 : x
2. Step 2: Convert to fraction form
   21,753.38/30,018.66 = 12,322.02/x
3. Step 3: Cross multiply
   21,753.38x = 30,018.66 × 12,322.02
4. Step 4: Simplify right side
   21,753.38x = 369,890,528.89
5. Step 5: Solve for x
   x = 369,890,528.89/21,753.38
6. Step 6: Final answer
   x = 17,003.82