Finding the Fourth Proportional to 6,804.39, 9,389.78 and 3,820.47

Step by Step Solution

1. Step 1: Write the proportion equation
   6,804.39 : 9,389.78 = 3,820.47 : x
2. Step 2: Convert to fraction form
   6,804.39/9,389.78 = 3,820.47/x
3. Step 3: Cross multiply
   6,804.39x = 9,389.78 × 3,820.47
4. Step 4: Simplify right side
   6,804.39x = 35,873,353.69
5. Step 5: Solve for x
   x = 35,873,353.69/6,804.39
6. Step 6: Final answer
   x = 5,272.09