Finding the Fourth Proportional to 9,401.54, 12,957.89 and 8,199.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.54 : 12,957.89 = 8,199.03 : x
2. Step 2: Convert to fraction form
   9,401.54/12,957.89 = 8,199.03/x
3. Step 3: Cross multiply
   9,401.54x = 12,957.89 × 8,199.03
4. Step 4: Simplify right side
   9,401.54x = 106,242,128.85
5. Step 5: Solve for x
   x = 106,242,128.85/9,401.54
6. Step 6: Final answer
   x = 11,300.50