Finding the Fourth Proportional to 6,200.42, 8,556.81 and 3,405.74

Step by Step Solution

1. Step 1: Write the proportion equation
   6,200.42 : 8,556.81 = 3,405.74 : x
2. Step 2: Convert to fraction form
   6,200.42/8,556.81 = 3,405.74/x
3. Step 3: Cross multiply
   6,200.42x = 8,556.81 × 3,405.74
4. Step 4: Simplify right side
   6,200.42x = 29,142,270.09
5. Step 5: Solve for x
   x = 29,142,270.09/6,200.42
6. Step 6: Final answer
   x = 4,700.05