Finding the Fourth Proportional to 17,147.38, 25,725.69 and 7,148.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,147.38 : 25,725.69 = 7,148.80 : x
2. Step 2: Convert to fraction form
   17,147.38/25,725.69 = 7,148.80/x
3. Step 3: Cross multiply
   17,147.38x = 25,725.69 × 7,148.80
4. Step 4: Simplify right side
   17,147.38x = 183,907,844.83
5. Step 5: Solve for x
   x = 183,907,844.83/17,147.38
6. Step 6: Final answer
   x = 10,725.13