Finding the Fourth Proportional to 9,551.30, 13,180.79 and 5,359.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,551.30 : 13,180.79 = 5,359.55 : x
2. Step 2: Convert to fraction form
   9,551.30/13,180.79 = 5,359.55/x
3. Step 3: Cross multiply
   9,551.30x = 13,180.79 × 5,359.55
4. Step 4: Simplify right side
   9,551.30x = 70,643,050.54
5. Step 5: Solve for x
   x = 70,643,050.54/9,551.30
6. Step 6: Final answer
   x = 7,396.18