Finding the Fourth Proportional to 14,298.14, 21,447.60 and 3,909.89

Step by Step Solution

1. Step 1: Write the proportion equation
   14,298.14 : 21,447.60 = 3,909.89 : x
2. Step 2: Convert to fraction form
   14,298.14/21,447.60 = 3,909.89/x
3. Step 3: Cross multiply
   14,298.14x = 21,447.60 × 3,909.89
4. Step 4: Simplify right side
   14,298.14x = 83,857,756.76
5. Step 5: Solve for x
   x = 83,857,756.76/14,298.14
6. Step 6: Final answer
   x = 5,864.94