Finding the Fourth Proportional to 13,189.28, 19,783.94 and 3,329.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,189.28 : 19,783.94 = 3,329.32 : x
2. Step 2: Convert to fraction form
   13,189.28/19,783.94 = 3,329.32/x
3. Step 3: Cross multiply
   13,189.28x = 19,783.94 × 3,329.32
4. Step 4: Simplify right side
   13,189.28x = 65,867,067.12
5. Step 5: Solve for x
   x = 65,867,067.12/13,189.28
6. Step 6: Final answer
   x = 4,993.99