Finding the Fourth Proportional to 17,105.88, 25,659.54 and 5,418.84

Step by Step Solution

1. Step 1: Write the proportion equation
   17,105.88 : 25,659.54 = 5,418.84 : x
2. Step 2: Convert to fraction form
   17,105.88/25,659.54 = 5,418.84/x
3. Step 3: Cross multiply
   17,105.88x = 25,659.54 × 5,418.84
4. Step 4: Simplify right side
   17,105.88x = 139,044,941.73
5. Step 5: Solve for x
   x = 139,044,941.73/17,105.88
6. Step 6: Final answer
   x = 8,128.49