Finding the Fourth Proportional to 8,158.85, 12,242.88 and 3,478.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,158.85 : 12,242.88 = 3,478.37 : x
2. Step 2: Convert to fraction form
   8,158.85/12,242.88 = 3,478.37/x
3. Step 3: Cross multiply
   8,158.85x = 12,242.88 × 3,478.37
4. Step 4: Simplify right side
   8,158.85x = 42,585,205.29
5. Step 5: Solve for x
   x = 42,585,205.29/8,158.85
6. Step 6: Final answer
   x = 5,219.51