Finding the Fourth Proportional to 22,369.47, 30,869.34 and 12,160.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,369.47 : 30,869.34 = 12,160.25 : x
2. Step 2: Convert to fraction form
   22,369.47/30,869.34 = 12,160.25/x
3. Step 3: Cross multiply
   22,369.47x = 30,869.34 × 12,160.25
4. Step 4: Simplify right side
   22,369.47x = 375,378,737.39
5. Step 5: Solve for x
   x = 375,378,737.39/22,369.47
6. Step 6: Final answer
   x = 16,780.85