Finding the Fourth Proportional to 13,323.69, 19,983.71 and 3,965.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,323.69 : 19,983.71 = 3,965.15 : x
2. Step 2: Convert to fraction form
   13,323.69/19,983.71 = 3,965.15/x
3. Step 3: Cross multiply
   13,323.69x = 19,983.71 × 3,965.15
4. Step 4: Simplify right side
   13,323.69x = 79,238,467.58
5. Step 5: Solve for x
   x = 79,238,467.58/13,323.69
6. Step 6: Final answer
   x = 5,947.19