Finding the Fourth Proportional to 22,375, 30,878.16 and 12,302.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,375 : 30,878.16 = 12,302.92 : x
2. Step 2: Convert to fraction form
   22,375/30,878.16 = 12,302.92/x
3. Step 3: Cross multiply
   22,375x = 30,878.16 × 12,302.92
4. Step 4: Simplify right side
   22,375x = 379,891,532.23
5. Step 5: Solve for x
   x = 379,891,532.23/22,375
6. Step 6: Final answer
   x = 16,978.39