Finding the Fourth Proportional to 17,105.51, 25,658.99 and 5,418.47

Step by Step Solution

1. Step 1: Write the proportion equation
   17,105.51 : 25,658.99 = 5,418.47 : x
2. Step 2: Convert to fraction form
   17,105.51/25,658.99 = 5,418.47/x
3. Step 3: Cross multiply
   17,105.51x = 25,658.99 × 5,418.47
4. Step 4: Simplify right side
   17,105.51x = 139,032,312.16
5. Step 5: Solve for x
   x = 139,032,312.16/17,105.51
6. Step 6: Final answer
   x = 8,127.93