Finding the Fourth Proportional to 13,329.10, 18,397.83 and 8,290.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,329.10 : 18,397.83 = 8,290.32 : x
2. Step 2: Convert to fraction form
   13,329.10/18,397.83 = 8,290.32/x
3. Step 3: Cross multiply
   13,329.10x = 18,397.83 × 8,290.32
4. Step 4: Simplify right side
   13,329.10x = 152,524,015.33
5. Step 5: Solve for x
   x = 152,524,015.33/13,329.10
6. Step 6: Final answer
   x = 11,442.93