Finding the Fourth Proportional to 6,804.88, 9,390.60 and 3,820.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,804.88 : 9,390.60 = 3,820.72 : x
2. Step 2: Convert to fraction form
   6,804.88/9,390.60 = 3,820.72/x
3. Step 3: Cross multiply
   6,804.88x = 9,390.60 × 3,820.72
4. Step 4: Simplify right side
   6,804.88x = 35,878,853.23
5. Step 5: Solve for x
   x = 35,878,853.23/6,804.88
6. Step 6: Final answer
   x = 5,272.52