Finding the Fourth Proportional to 8,169.89, 11,272.71 and 4,811.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,169.89 : 11,272.71 = 4,811.48 : x
2. Step 2: Convert to fraction form
   8,169.89/11,272.71 = 4,811.48/x
3. Step 3: Cross multiply
   8,169.89x = 11,272.71 × 4,811.48
4. Step 4: Simplify right side
   8,169.89x = 54,238,446.89
5. Step 5: Solve for x
   x = 54,238,446.89/8,169.89
6. Step 6: Final answer
   x = 6,638.82