Finding the Fourth Proportional to 9,982.69, 14,976.77 and 4,139.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,982.69 : 14,976.77 = 4,139.30 : x
2. Step 2: Convert to fraction form
   9,982.69/14,976.77 = 4,139.30/x
3. Step 3: Cross multiply
   9,982.69x = 14,976.77 × 4,139.30
4. Step 4: Simplify right side
   9,982.69x = 61,993,360.81
5. Step 5: Solve for x
   x = 61,993,360.81/9,982.69
6. Step 6: Final answer
   x = 6,210.09