Finding the Fourth Proportional to 22,165.55, 30,584.28 and 13,213.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,165.55 : 30,584.28 = 13,213.89 : x
2. Step 2: Convert to fraction form
   22,165.55/30,584.28 = 13,213.89/x
3. Step 3: Cross multiply
   22,165.55x = 30,584.28 × 13,213.89
4. Step 4: Simplify right side
   22,165.55x = 404,137,311.65
5. Step 5: Solve for x
   x = 404,137,311.65/22,165.55
6. Step 6: Final answer
   x = 18,232.68