Finding the Fourth Proportional to 13,305.53, 19,960.34 and 3,944.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,305.53 : 19,960.34 = 3,944.57 : x
2. Step 2: Convert to fraction form
   13,305.53/19,960.34 = 3,944.57/x
3. Step 3: Cross multiply
   13,305.53x = 19,960.34 × 3,944.57
4. Step 4: Simplify right side
   13,305.53x = 78,734,838.83
5. Step 5: Solve for x
   x = 78,734,838.83/13,305.53
6. Step 6: Final answer
   x = 5,917.45