Finding the Fourth Proportional to 22,160.05, 30,581.42 and 12,089.45

Step by Step Solution

1. Step 1: Write the proportion equation
   22,160.05 : 30,581.42 = 12,089.45 : x
2. Step 2: Convert to fraction form
   22,160.05/30,581.42 = 12,089.45/x
3. Step 3: Cross multiply
   22,160.05x = 30,581.42 × 12,089.45
4. Step 4: Simplify right side
   22,160.05x = 369,712,564.03
5. Step 5: Solve for x
   x = 369,712,564.03/22,160.05
6. Step 6: Final answer
   x = 16,683.74