Finding the Fourth Proportional to 13,287.82, 18,335.28 and 7,622.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,287.82 : 18,335.28 = 7,622.82 : x
2. Step 2: Convert to fraction form
   13,287.82/18,335.28 = 7,622.82/x
3. Step 3: Cross multiply
   13,287.82x = 18,335.28 × 7,622.82
4. Step 4: Simplify right side
   13,287.82x = 139,766,539.09
5. Step 5: Solve for x
   x = 139,766,539.09/13,287.82
6. Step 6: Final answer
   x = 10,518.39