Finding the Fourth Proportional to 43,401.84, 65,081.22 and 13,815.83

Step by Step Solution

1. Step 1: Write the proportion equation
   43,401.84 : 65,081.22 = 13,815.83 : x
2. Step 2: Convert to fraction form
   43,401.84/65,081.22 = 13,815.83/x
3. Step 3: Cross multiply
   43,401.84x = 65,081.22 × 13,815.83
4. Step 4: Simplify right side
   43,401.84x = 899,150,677.23
5. Step 5: Solve for x
   x = 899,150,677.23/43,401.84
6. Step 6: Final answer
   x = 20,716.88