Finding the Fourth Proportional to 22,443.62, 30,970.81 and 12,372.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,443.62 : 30,970.81 = 12,372.15 : x
2. Step 2: Convert to fraction form
   22,443.62/30,970.81 = 12,372.15/x
3. Step 3: Cross multiply
   22,443.62x = 30,970.81 × 12,372.15
4. Step 4: Simplify right side
   22,443.62x = 383,175,476.01
5. Step 5: Solve for x
   x = 383,175,476.01/22,443.62
6. Step 6: Final answer
   x = 17,072.80