Finding the Fourth Proportional to 9,819.78, 14,724 and 3,969.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.78 : 14,724 = 3,969.96 : x
2. Step 2: Convert to fraction form
   9,819.78/14,724 = 3,969.96/x
3. Step 3: Cross multiply
   9,819.78x = 14,724 × 3,969.96
4. Step 4: Simplify right side
   9,819.78x = 58,453,691.04
5. Step 5: Solve for x
   x = 58,453,691.04/9,819.78
6. Step 6: Final answer
   x = 5,952.65