Finding the Fourth Proportional to 6,071.34, 8,378.54 and 3,418.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,071.34 : 8,378.54 = 3,418.80 : x
2. Step 2: Convert to fraction form
   6,071.34/8,378.54 = 3,418.80/x
3. Step 3: Cross multiply
   6,071.34x = 8,378.54 × 3,418.80
4. Step 4: Simplify right side
   6,071.34x = 28,644,552.55
5. Step 5: Solve for x
   x = 28,644,552.55/6,071.34
6. Step 6: Final answer
   x = 4,718.00