Finding the Fourth Proportional to 21,754.74, 30,026.37 and 12,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,754.74 : 30,026.37 = 12,328.50 : x
2. Step 2: Convert to fraction form
   21,754.74/30,026.37 = 12,328.50/x
3. Step 3: Cross multiply
   21,754.74x = 30,026.37 × 12,328.50
4. Step 4: Simplify right side
   21,754.74x = 370,180,102.55
5. Step 5: Solve for x
   x = 370,180,102.55/21,754.74
6. Step 6: Final answer
   x = 17,016.07