Finding the Fourth Proportional to 22,020.66, 30,379.86 and 12,584.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,020.66 : 30,379.86 = 12,584.16 : x
2. Step 2: Convert to fraction form
   22,020.66/30,379.86 = 12,584.16/x
3. Step 3: Cross multiply
   22,020.66x = 30,379.86 × 12,584.16
4. Step 4: Simplify right side
   22,020.66x = 382,305,019.02
5. Step 5: Solve for x
   x = 382,305,019.02/22,020.66
6. Step 6: Final answer
   x = 17,361.20