Finding the Fourth Proportional to 17,140.29, 25,704.93 and 5,450.78

Step by Step Solution

1. Step 1: Write the proportion equation
   17,140.29 : 25,704.93 = 5,450.78 : x
2. Step 2: Convert to fraction form
   17,140.29/25,704.93 = 5,450.78/x
3. Step 3: Cross multiply
   17,140.29x = 25,704.93 × 5,450.78
4. Step 4: Simplify right side
   17,140.29x = 140,111,789.82
5. Step 5: Solve for x
   x = 140,111,789.82/17,140.29
6. Step 6: Final answer
   x = 8,174.41