Finding the Fourth Proportional to 7,287.20, 10,907.76 and 5,200.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,287.20 : 10,907.76 = 5,200.48 : x
2. Step 2: Convert to fraction form
   7,287.20/10,907.76 = 5,200.48/x
3. Step 3: Cross multiply
   7,287.20x = 10,907.76 × 5,200.48
4. Step 4: Simplify right side
   7,287.20x = 56,725,587.72
5. Step 5: Solve for x
   x = 56,725,587.72/7,287.20
6. Step 6: Final answer
   x = 7,784.28