Finding the Fourth Proportional to 8,116.34, 12,176.16 and 3,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,116.34 : 12,176.16 = 3,118.50 : x
2. Step 2: Convert to fraction form
   8,116.34/12,176.16 = 3,118.50/x
3. Step 3: Cross multiply
   8,116.34x = 12,176.16 × 3,118.50
4. Step 4: Simplify right side
   8,116.34x = 37,971,343.27
5. Step 5: Solve for x
   x = 37,971,343.27/8,116.34
6. Step 6: Final answer
   x = 4,678.39