Finding the Fourth Proportional to 8,216.94, 12,288.81 and 7,298.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,216.94 : 12,288.81 = 7,298.46 : x
2. Step 2: Convert to fraction form
   8,216.94/12,288.81 = 7,298.46/x
3. Step 3: Cross multiply
   8,216.94x = 12,288.81 × 7,298.46
4. Step 4: Simplify right side
   8,216.94x = 89,689,388.23
5. Step 5: Solve for x
   x = 89,689,388.23/8,216.94
6. Step 6: Final answer
   x = 10,915.18