Finding the Fourth Proportional to 18,100.72, 24,938.72 and 13,542.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,100.72 : 24,938.72 = 13,542.88 : x
2. Step 2: Convert to fraction form
   18,100.72/24,938.72 = 13,542.88/x
3. Step 3: Cross multiply
   18,100.72x = 24,938.72 × 13,542.88
4. Step 4: Simplify right side
   18,100.72x = 337,742,135.98
5. Step 5: Solve for x
   x = 337,742,135.98/18,100.72
6. Step 6: Final answer
   x = 18,659.04