Finding the Fourth Proportional to 22,123.68, 30,520.56 and 13,166.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,123.68 : 30,520.56 = 13,166.16 : x
2. Step 2: Convert to fraction form
   22,123.68/30,520.56 = 13,166.16/x
3. Step 3: Cross multiply
   22,123.68x = 30,520.56 × 13,166.16
4. Step 4: Simplify right side
   22,123.68x = 401,838,576.25
5. Step 5: Solve for x
   x = 401,838,576.25/22,123.68
6. Step 6: Final answer
   x = 18,163.28