Finding the Fourth Proportional to 13,727.88, 20,591.58 and 3,339.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,727.88 : 20,591.58 = 3,339.72 : x
2. Step 2: Convert to fraction form
   13,727.88/20,591.58 = 3,339.72/x
3. Step 3: Cross multiply
   13,727.88x = 20,591.58 × 3,339.72
4. Step 4: Simplify right side
   13,727.88x = 68,770,111.56
5. Step 5: Solve for x
   x = 68,770,111.56/13,727.88
6. Step 6: Final answer
   x = 5,009.52