Finding the Fourth Proportional to 22,157.52, 30,576.63 and 13,200.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,157.52 : 30,576.63 = 13,200.39 : x
2. Step 2: Convert to fraction form
   22,157.52/30,576.63 = 13,200.39/x
3. Step 3: Cross multiply
   22,157.52x = 30,576.63 × 13,200.39
4. Step 4: Simplify right side
   22,157.52x = 403,623,440.89
5. Step 5: Solve for x
   x = 403,623,440.89/22,157.52
6. Step 6: Final answer
   x = 18,216.09