Finding the Fourth Proportional to 22,377.30, 30,882.38 and 12,820.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,377.30 : 30,882.38 = 12,820.22 : x
2. Step 2: Convert to fraction form
   22,377.30/30,882.38 = 12,820.22/x
3. Step 3: Cross multiply
   22,377.30x = 30,882.38 × 12,820.22
4. Step 4: Simplify right side
   22,377.30x = 395,918,905.72
5. Step 5: Solve for x
   x = 395,918,905.72/22,377.30
6. Step 6: Final answer
   x = 17,692.88