Finding the Fourth Proportional to 6,804.72, 9,390.42 and 3,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,804.72 : 9,390.42 = 3,820.50 : x
2. Step 2: Convert to fraction form
   6,804.72/9,390.42 = 3,820.50/x
3. Step 3: Cross multiply
   6,804.72x = 9,390.42 × 3,820.50
4. Step 4: Simplify right side
   6,804.72x = 35,876,099.61
5. Step 5: Solve for x
   x = 35,876,099.61/6,804.72
6. Step 6: Final answer
   x = 5,272.24