Finding the Fourth Proportional to 22,128.34, 30,534.46 and 12,568.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,128.34 : 30,534.46 = 12,568.16 : x
2. Step 2: Convert to fraction form
   22,128.34/30,534.46 = 12,568.16/x
3. Step 3: Cross multiply
   22,128.34x = 30,534.46 × 12,568.16
4. Step 4: Simplify right side
   22,128.34x = 383,761,978.79
5. Step 5: Solve for x
   x = 383,761,978.79/22,128.34
6. Step 6: Final answer
   x = 17,342.56