Finding the Fourth Proportional to 17,106.51, 25,660.49 and 5,419.47

Step by Step Solution

1. Step 1: Write the proportion equation
   17,106.51 : 25,660.49 = 5,419.47 : x
2. Step 2: Convert to fraction form
   17,106.51/25,660.49 = 5,419.47/x
3. Step 3: Cross multiply
   17,106.51x = 25,660.49 × 5,419.47
4. Step 4: Simplify right side
   17,106.51x = 139,066,255.74
5. Step 5: Solve for x
   x = 139,066,255.74/17,106.51
6. Step 6: Final answer
   x = 8,129.43