Finding the Fourth Proportional to 22,215.55, 30,659.36 and 12,658.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,215.55 : 30,659.36 = 12,658.36 : x
2. Step 2: Convert to fraction form
   22,215.55/30,659.36 = 12,658.36/x
3. Step 3: Cross multiply
   22,215.55x = 30,659.36 × 12,658.36
4. Step 4: Simplify right side
   22,215.55x = 388,097,076.31
5. Step 5: Solve for x
   x = 388,097,076.31/22,215.55
6. Step 6: Final answer
   x = 17,469.62