Finding the Fourth Proportional to 8,791.12, 12,131.94 and 5,253.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,791.12 : 12,131.94 = 5,253.04 : x
2. Step 2: Convert to fraction form
   8,791.12/12,131.94 = 5,253.04/x
3. Step 3: Cross multiply
   8,791.12x = 12,131.94 × 5,253.04
4. Step 4: Simplify right side
   8,791.12x = 63,729,566.10
5. Step 5: Solve for x
   x = 63,729,566.10/8,791.12
6. Step 6: Final answer
   x = 7,249.31