Finding the Fourth Proportional to 9,146.83, 12,622.87 and 5,167.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.83 : 12,622.87 = 5,167.85 : x
2. Step 2: Convert to fraction form
   9,146.83/12,622.87 = 5,167.85/x
3. Step 3: Cross multiply
   9,146.83x = 12,622.87 × 5,167.85
4. Step 4: Simplify right side
   9,146.83x = 65,233,126.69
5. Step 5: Solve for x
   x = 65,233,126.69/9,146.83
6. Step 6: Final answer
   x = 7,131.78