Finding the Fourth Proportional to 8,116.32, 12,174.56 and 3,186.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,116.32 : 12,174.56 = 3,186.45 : x
2. Step 2: Convert to fraction form
   8,116.32/12,174.56 = 3,186.45/x
3. Step 3: Cross multiply
   8,116.32x = 12,174.56 × 3,186.45
4. Step 4: Simplify right side
   8,116.32x = 38,793,610.78
5. Step 5: Solve for x
   x = 38,793,610.78/8,116.32
6. Step 6: Final answer
   x = 4,779.70