Finding the Fourth Proportional to 9,288.60, 12,816.06 and 5,255.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.60 : 12,816.06 = 5,255.52 : x
2. Step 2: Convert to fraction form
   9,288.60/12,816.06 = 5,255.52/x
3. Step 3: Cross multiply
   9,288.60x = 12,816.06 × 5,255.52
4. Step 4: Simplify right side
   9,288.60x = 67,355,059.65
5. Step 5: Solve for x
   x = 67,355,059.65/9,288.60
6. Step 6: Final answer
   x = 7,251.37