Finding the Fourth Proportional to 9,146.72, 12,622.38 and 5,167.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.72 : 12,622.38 = 5,167.82 : x
2. Step 2: Convert to fraction form
   9,146.72/12,622.38 = 5,167.82/x
3. Step 3: Cross multiply
   9,146.72x = 12,622.38 × 5,167.82
4. Step 4: Simplify right side
   9,146.72x = 65,230,187.81
5. Step 5: Solve for x
   x = 65,230,187.81/9,146.72
6. Step 6: Final answer
   x = 7,131.54