Finding the Fourth Proportional to 9,384.89, 12,945.89 and 8,433.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,384.89 : 12,945.89 = 8,433.54 : x
2. Step 2: Convert to fraction form
   9,384.89/12,945.89 = 8,433.54/x
3. Step 3: Cross multiply
   9,384.89x = 12,945.89 × 8,433.54
4. Step 4: Simplify right side
   9,384.89x = 109,179,702.23
5. Step 5: Solve for x
   x = 109,179,702.23/9,384.89
6. Step 6: Final answer
   x = 11,633.57