Finding the Fourth Proportional to 9,436.99, 13,022.72 and 5,245.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,436.99 : 13,022.72 = 5,245.15 : x
2. Step 2: Convert to fraction form
   9,436.99/13,022.72 = 5,245.15/x
3. Step 3: Cross multiply
   9,436.99x = 13,022.72 × 5,245.15
4. Step 4: Simplify right side
   9,436.99x = 68,306,054.69
5. Step 5: Solve for x
   x = 68,306,054.69/9,436.99
6. Step 6: Final answer
   x = 7,238.12