Finding the Fourth Proportional to 21,753.54, 30,019.68 and 12,322.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,753.54 : 30,019.68 = 12,322.17 : x
2. Step 2: Convert to fraction form
   21,753.54/30,019.68 = 12,322.17/x
3. Step 3: Cross multiply
   21,753.54x = 30,019.68 × 12,322.17
4. Step 4: Simplify right side
   21,753.54x = 369,907,600.31
5. Step 5: Solve for x
   x = 369,907,600.31/21,753.54
6. Step 6: Final answer
   x = 17,004.48