Finding the Fourth Proportional to 6,186.28, 8,536.82 and 3,391.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,186.28 : 8,536.82 = 3,391.78 : x
2. Step 2: Convert to fraction form
   6,186.28/8,536.82 = 3,391.78/x
3. Step 3: Cross multiply
   6,186.28x = 8,536.82 × 3,391.78
4. Step 4: Simplify right side
   6,186.28x = 28,955,015.34
5. Step 5: Solve for x
   x = 28,955,015.34/6,186.28
6. Step 6: Final answer
   x = 4,680.52