Finding the Fourth Proportional to 22,084.94, 30,480.16 and 12,528.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,084.94 : 30,480.16 = 12,528.28 : x
2. Step 2: Convert to fraction form
   22,084.94/30,480.16 = 12,528.28/x
3. Step 3: Cross multiply
   22,084.94x = 30,480.16 × 12,528.28
4. Step 4: Simplify right side
   22,084.94x = 381,863,978.92
5. Step 5: Solve for x
   x = 381,863,978.92/22,084.94
6. Step 6: Final answer
   x = 17,290.70