Finding the Fourth Proportional to 9,351.84, 12,807.27 and 9,228.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,351.84 : 12,807.27 = 9,228.82 : x
2. Step 2: Convert to fraction form
   9,351.84/12,807.27 = 9,228.82/x
3. Step 3: Cross multiply
   9,351.84x = 12,807.27 × 9,228.82
4. Step 4: Simplify right side
   9,351.84x = 118,195,989.52
5. Step 5: Solve for x
   x = 118,195,989.52/9,351.84
6. Step 6: Final answer
   x = 12,638.80