Finding the Fourth Proportional to 8,116.70, 12,196.31 and 7,079.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,116.70 : 12,196.31 = 7,079.29 : x
2. Step 2: Convert to fraction form
   8,116.70/12,196.31 = 7,079.29/x
3. Step 3: Cross multiply
   8,116.70x = 12,196.31 × 7,079.29
4. Step 4: Simplify right side
   8,116.70x = 86,341,149.53
5. Step 5: Solve for x
   x = 86,341,149.53/8,116.70
6. Step 6: Final answer
   x = 10,637.48