Finding the Fourth Proportional to 17,105.44, 25,662.72 and 5,418.88

Step by Step Solution

1. Step 1: Write the proportion equation
   17,105.44 : 25,662.72 = 5,418.88 : x
2. Step 2: Convert to fraction form
   17,105.44/25,662.72 = 5,418.88/x
3. Step 3: Cross multiply
   17,105.44x = 25,662.72 × 5,418.88
4. Step 4: Simplify right side
   17,105.44x = 139,063,200.15
5. Step 5: Solve for x
   x = 139,063,200.15/17,105.44
6. Step 6: Final answer
   x = 8,129.76