Finding the Fourth Proportional to 6,139.21, 8,472.15 and 3,344.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,139.21 : 8,472.15 = 3,344.71 : x
2. Step 2: Convert to fraction form
   6,139.21/8,472.15 = 3,344.71/x
3. Step 3: Cross multiply
   6,139.21x = 8,472.15 × 3,344.71
4. Step 4: Simplify right side
   6,139.21x = 28,336,884.83
5. Step 5: Solve for x
   x = 28,336,884.83/6,139.21
6. Step 6: Final answer
   x = 4,615.72