Finding the Fourth Proportional to 6,142.20, 8,476.56 and 3,347.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,142.20 : 8,476.56 = 3,347.88 : x
2. Step 2: Convert to fraction form
   6,142.20/8,476.56 = 3,347.88/x
3. Step 3: Cross multiply
   6,142.20x = 8,476.56 × 3,347.88
4. Step 4: Simplify right side
   6,142.20x = 28,378,505.69
5. Step 5: Solve for x
   x = 28,378,505.69/6,142.20
6. Step 6: Final answer
   x = 4,620.25