Finding the Fourth Proportional to 12,385.67, 18,584.88 and 8,228.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.67 : 18,584.88 = 8,228.54 : x
2. Step 2: Convert to fraction form
   12,385.67/18,584.88 = 8,228.54/x
3. Step 3: Cross multiply
   12,385.67x = 18,584.88 × 8,228.54
4. Step 4: Simplify right side
   12,385.67x = 152,926,428.48
5. Step 5: Solve for x
   x = 152,926,428.48/12,385.67
6. Step 6: Final answer
   x = 12,347.05