Finding the Fourth Proportional to 22,298.62, 30,772.68 and 12,607.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,298.62 : 30,772.68 = 12,607.30 : x
2. Step 2: Convert to fraction form
   22,298.62/30,772.68 = 12,607.30/x
3. Step 3: Cross multiply
   22,298.62x = 30,772.68 × 12,607.30
4. Step 4: Simplify right side
   22,298.62x = 387,960,408.56
5. Step 5: Solve for x
   x = 387,960,408.56/22,298.62
6. Step 6: Final answer
   x = 17,398.40