Finding the Fourth Proportional to 22,167.22, 30,594.72 and 13,215.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,167.22 : 30,594.72 = 13,215.30 : x
2. Step 2: Convert to fraction form
   22,167.22/30,594.72 = 13,215.30/x
3. Step 3: Cross multiply
   22,167.22x = 30,594.72 × 13,215.30
4. Step 4: Simplify right side
   22,167.22x = 404,318,403.22
5. Step 5: Solve for x
   x = 404,318,403.22/22,167.22
6. Step 6: Final answer
   x = 18,239.47