Finding the Fourth Proportional to 6,196.53, 9,278.96 and 3,420.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,196.53 : 9,278.96 = 3,420.12 : x
2. Step 2: Convert to fraction form
   6,196.53/9,278.96 = 3,420.12/x
3. Step 3: Cross multiply
   6,196.53x = 9,278.96 × 3,420.12
4. Step 4: Simplify right side
   6,196.53x = 31,735,174.37
5. Step 5: Solve for x
   x = 31,735,174.37/6,196.53
6. Step 6: Final answer
   x = 5,121.44