Finding the Fourth Proportional to 9,356.52, 12,908.81 and 5,577.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,356.52 : 12,908.81 = 5,577.12 : x
2. Step 2: Convert to fraction form
   9,356.52/12,908.81 = 5,577.12/x
3. Step 3: Cross multiply
   9,356.52x = 12,908.81 × 5,577.12
4. Step 4: Simplify right side
   9,356.52x = 71,993,954.54
5. Step 5: Solve for x
   x = 71,993,954.54/9,356.52
6. Step 6: Final answer
   x = 7,694.52