Finding the Fourth Proportional to 22,172.62, 30,598.59 and 12,612.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,172.62 : 30,598.59 = 12,612.28 : x
2. Step 2: Convert to fraction form
   22,172.62/30,598.59 = 12,612.28/x
3. Step 3: Cross multiply
   22,172.62x = 30,598.59 × 12,612.28
4. Step 4: Simplify right side
   22,172.62x = 385,917,984.69
5. Step 5: Solve for x
   x = 385,917,984.69/22,172.62
6. Step 6: Final answer
   x = 17,405.16