Finding the Fourth Proportional to 8,118.06, 12,167.86 and 3,435.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,118.06 : 12,167.86 = 3,435.15 : x
2. Step 2: Convert to fraction form
   8,118.06/12,167.86 = 3,435.15/x
3. Step 3: Cross multiply
   8,118.06x = 12,167.86 × 3,435.15
4. Step 4: Simplify right side
   8,118.06x = 41,798,424.28
5. Step 5: Solve for x
   x = 41,798,424.28/8,118.06
6. Step 6: Final answer
   x = 5,148.82