Finding the Fourth Proportional to 22,123.21, 30,524.28 and 13,166.77

Step by Step Solution

1. Step 1: Write the proportion equation
   22,123.21 : 30,524.28 = 13,166.77 : x
2. Step 2: Convert to fraction form
   22,123.21/30,524.28 = 13,166.77/x
3. Step 3: Cross multiply
   22,123.21x = 30,524.28 × 13,166.77
4. Step 4: Simplify right side
   22,123.21x = 401,906,174.18
5. Step 5: Solve for x
   x = 401,906,174.18/22,123.21
6. Step 6: Final answer
   x = 18,166.72