Finding the Fourth Proportional to 13,287.52, 18,336.83 and 7,622.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,287.52 : 18,336.83 = 7,622.48 : x
2. Step 2: Convert to fraction form
   13,287.52/18,336.83 = 7,622.48/x
3. Step 3: Cross multiply
   13,287.52x = 18,336.83 × 7,622.48
4. Step 4: Simplify right side
   13,287.52x = 139,772,119.94
5. Step 5: Solve for x
   x = 139,772,119.94/13,287.52
6. Step 6: Final answer
   x = 10,519.05