Finding the Fourth Proportional to 17,145.51, 25,716.43 and 5,457.82

Step by Step Solution

1. Step 1: Write the proportion equation
   17,145.51 : 25,716.43 = 5,457.82 : x
2. Step 2: Convert to fraction form
   17,145.51/25,716.43 = 5,457.82/x
3. Step 3: Cross multiply
   17,145.51x = 25,716.43 × 5,457.82
4. Step 4: Simplify right side
   17,145.51x = 140,355,490.11
5. Step 5: Solve for x
   x = 140,355,490.11/17,145.51
6. Step 6: Final answer
   x = 8,186.14