Finding the Fourth Proportional to 9,436.15, 13,022.04 and 5,187.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,436.15 : 13,022.04 = 5,187.39 : x
2. Step 2: Convert to fraction form
   9,436.15/13,022.04 = 5,187.39/x
3. Step 3: Cross multiply
   9,436.15x = 13,022.04 × 5,187.39
4. Step 4: Simplify right side
   9,436.15x = 67,550,347.93
5. Step 5: Solve for x
   x = 67,550,347.93/9,436.15
6. Step 6: Final answer
   x = 7,158.68