Finding the Fourth Proportional to 17,238.72, 25,868.40 and 7,378

Step by Step Solution

1. Step 1: Write the proportion equation
   17,238.72 : 25,868.40 = 7,378 : x
2. Step 2: Convert to fraction form
   17,238.72/25,868.40 = 7,378/x
3. Step 3: Cross multiply
   17,238.72x = 25,868.40 × 7,378
4. Step 4: Simplify right side
   17,238.72x = 190,857,055.20
5. Step 5: Solve for x
   x = 190,857,055.20/17,238.72
6. Step 6: Final answer
   x = 11,071.42