Finding the Fourth Proportional to 8,791.34, 12,131.98 and 4,812.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,791.34 : 12,131.98 = 4,812.36 : x
2. Step 2: Convert to fraction form
   8,791.34/12,131.98 = 4,812.36/x
3. Step 3: Cross multiply
   8,791.34x = 12,131.98 × 4,812.36
4. Step 4: Simplify right side
   8,791.34x = 58,383,455.27
5. Step 5: Solve for x
   x = 58,383,455.27/8,791.34
6. Step 6: Final answer
   x = 6,641.02