Finding the Fourth Proportional to 17,238.78, 25,869.71 and 7,380.47

Step by Step Solution

1. Step 1: Write the proportion equation
   17,238.78 : 25,869.71 = 7,380.47 : x
2. Step 2: Convert to fraction form
   17,238.78/25,869.71 = 7,380.47/x
3. Step 3: Cross multiply
   17,238.78x = 25,869.71 × 7,380.47
4. Step 4: Simplify right side
   17,238.78x = 190,930,618.56
5. Step 5: Solve for x
   x = 190,930,618.56/17,238.78
6. Step 6: Final answer
   x = 11,075.65