Finding the Fourth Proportional to 6,506.21, 8,978.69 and 3,674.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,506.21 : 8,978.69 = 3,674.15 : x
2. Step 2: Convert to fraction form
   6,506.21/8,978.69 = 3,674.15/x
3. Step 3: Cross multiply
   6,506.21x = 8,978.69 × 3,674.15
4. Step 4: Simplify right side
   6,506.21x = 32,989,053.86
5. Step 5: Solve for x
   x = 32,989,053.86/6,506.21
6. Step 6: Final answer
   x = 5,070.39