Finding the Fourth Proportional to 8,173.31, 12,265.02 and 3,791.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,173.31 : 12,265.02 = 3,791.21 : x
2. Step 2: Convert to fraction form
   8,173.31/12,265.02 = 3,791.21/x
3. Step 3: Cross multiply
   8,173.31x = 12,265.02 × 3,791.21
4. Step 4: Simplify right side
   8,173.31x = 46,499,205.15
5. Step 5: Solve for x
   x = 46,499,205.15/8,173.31
6. Step 6: Final answer
   x = 5,689.16