Finding the Fourth Proportional to 12,387.18, 17,097.37 and 7,608.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,387.18 : 17,097.37 = 7,608.28 : x
2. Step 2: Convert to fraction form
   12,387.18/17,097.37 = 7,608.28/x
3. Step 3: Cross multiply
   12,387.18x = 17,097.37 × 7,608.28
4. Step 4: Simplify right side
   12,387.18x = 130,081,578.22
5. Step 5: Solve for x
   x = 130,081,578.22/12,387.18
6. Step 6: Final answer
   x = 10,501.31