Finding the Fourth Proportional to 8,844.31, 12,215.78 and 7,679.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,844.31 : 12,215.78 = 7,679.94 : x
2. Step 2: Convert to fraction form
   8,844.31/12,215.78 = 7,679.94/x
3. Step 3: Cross multiply
   8,844.31x = 12,215.78 × 7,679.94
4. Step 4: Simplify right side
   8,844.31x = 93,816,457.45
5. Step 5: Solve for x
   x = 93,816,457.45/8,844.31
6. Step 6: Final answer
   x = 10,607.55