Finding the Fourth Proportional to 12,636.24, 17,436.52 and 7,258.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,636.24 : 17,436.52 = 7,258.36 : x
2. Step 2: Convert to fraction form
   12,636.24/17,436.52 = 7,258.36/x
3. Step 3: Cross multiply
   12,636.24x = 17,436.52 × 7,258.36
4. Step 4: Simplify right side
   12,636.24x = 126,560,539.31
5. Step 5: Solve for x
   x = 126,560,539.31/12,636.24
6. Step 6: Final answer
   x = 10,015.68