Finding the Fourth Proportional to 13,290.29, 18,340.52 and 7,321.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,290.29 : 18,340.52 = 7,321.82 : x
2. Step 2: Convert to fraction form
   13,290.29/18,340.52 = 7,321.82/x
3. Step 3: Cross multiply
   13,290.29x = 18,340.52 × 7,321.82
4. Step 4: Simplify right side
   13,290.29x = 134,285,949.54
5. Step 5: Solve for x
   x = 134,285,949.54/13,290.29
6. Step 6: Final answer
   x = 10,104.06