Finding the Fourth Proportional to 22,692.69, 31,315.37 and 12,621.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,692.69 : 31,315.37 = 12,621.10 : x
2. Step 2: Convert to fraction form
   22,692.69/31,315.37 = 12,621.10/x
3. Step 3: Cross multiply
   22,692.69x = 31,315.37 × 12,621.10
4. Step 4: Simplify right side
   22,692.69x = 395,234,353.20
5. Step 5: Solve for x
   x = 395,234,353.20/22,692.69
6. Step 6: Final answer
   x = 17,416.81