Finding the Fourth Proportional to 21,754.79, 30,019.57 and 12,323.35

Step by Step Solution

1. Step 1: Write the proportion equation
   21,754.79 : 30,019.57 = 12,323.35 : x
2. Step 2: Convert to fraction form
   21,754.79/30,019.57 = 12,323.35/x
3. Step 3: Cross multiply
   21,754.79x = 30,019.57 × 12,323.35
4. Step 4: Simplify right side
   21,754.79x = 369,941,667.96
5. Step 5: Solve for x
   x = 369,941,667.96/21,754.79
6. Step 6: Final answer
   x = 17,005.07