Finding the Fourth Proportional to 22,168.16, 30,591.28 and 12,607.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,168.16 : 30,591.28 = 12,607.20 : x
2. Step 2: Convert to fraction form
   22,168.16/30,591.28 = 12,607.20/x
3. Step 3: Cross multiply
   22,168.16x = 30,591.28 × 12,607.20
4. Step 4: Simplify right side
   22,168.16x = 385,670,385.22
5. Step 5: Solve for x
   x = 385,670,385.22/22,168.16
6. Step 6: Final answer
   x = 17,397.49