Finding the Fourth Proportional to 13,313.83, 19,974.73 and 3,954.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,313.83 : 19,974.73 = 3,954.15 : x
2. Step 2: Convert to fraction form
   13,313.83/19,974.73 = 3,954.15/x
3. Step 3: Cross multiply
   13,313.83x = 19,974.73 × 3,954.15
4. Step 4: Simplify right side
   13,313.83x = 78,983,078.63
5. Step 5: Solve for x
   x = 78,983,078.63/13,313.83
6. Step 6: Final answer
   x = 5,932.41