Finding the Fourth Proportional to 9,436.52, 13,022.56 and 5,187.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,436.52 : 13,022.56 = 5,187.76 : x
2. Step 2: Convert to fraction form
   9,436.52/13,022.56 = 5,187.76/x
3. Step 3: Cross multiply
   9,436.52x = 13,022.56 × 5,187.76
4. Step 4: Simplify right side
   9,436.52x = 67,557,882.50
5. Step 5: Solve for x
   x = 67,557,882.50/9,436.52
6. Step 6: Final answer
   x = 7,159.20