Finding the Fourth Proportional to 9,161.82, 12,644.91 and 5,184.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,161.82 : 12,644.91 = 5,184.18 : x
2. Step 2: Convert to fraction form
   9,161.82/12,644.91 = 5,184.18/x
3. Step 3: Cross multiply
   9,161.82x = 12,644.91 × 5,184.18
4. Step 4: Simplify right side
   9,161.82x = 65,553,489.52
5. Step 5: Solve for x
   x = 65,553,489.52/9,161.82
6. Step 6: Final answer
   x = 7,155.07