Finding the Fourth Proportional to 9,828.85, 14,734.98 and 3,989.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,828.85 : 14,734.98 = 3,989.56 : x
2. Step 2: Convert to fraction form
   9,828.85/14,734.98 = 3,989.56/x
3. Step 3: Cross multiply
   9,828.85x = 14,734.98 × 3,989.56
4. Step 4: Simplify right side
   9,828.85x = 58,786,086.81
5. Step 5: Solve for x
   x = 58,786,086.81/9,828.85
6. Step 6: Final answer
   x = 5,980.97