Finding the Fourth Proportional to 22,118.13, 30,517.83 and 13,168.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,118.13 : 30,517.83 = 13,168.98 : x
2. Step 2: Convert to fraction form
   22,118.13/30,517.83 = 13,168.98/x
3. Step 3: Cross multiply
   22,118.13x = 30,517.83 × 13,168.98
4. Step 4: Simplify right side
   22,118.13x = 401,888,692.91
5. Step 5: Solve for x
   x = 401,888,692.91/22,118.13
6. Step 6: Final answer
   x = 18,170.10