Finding the Fourth Proportional to 6,379.69, 8,801.79 and 3,988.03

Step by Step Solution

1. Step 1: Write the proportion equation
   6,379.69 : 8,801.79 = 3,988.03 : x
2. Step 2: Convert to fraction form
   6,379.69/8,801.79 = 3,988.03/x
3. Step 3: Cross multiply
   6,379.69x = 8,801.79 × 3,988.03
4. Step 4: Simplify right side
   6,379.69x = 35,101,802.57
5. Step 5: Solve for x
   x = 35,101,802.57/6,379.69
6. Step 6: Final answer
   x = 5,502.12