Finding the Fourth Proportional to 9,146.94, 12,622.71 and 5,167.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.94 : 12,622.71 = 5,167.98 : x
2. Step 2: Convert to fraction form
   9,146.94/12,622.71 = 5,167.98/x
3. Step 3: Cross multiply
   9,146.94x = 12,622.71 × 5,167.98
4. Step 4: Simplify right side
   9,146.94x = 65,233,912.83
5. Step 5: Solve for x
   x = 65,233,912.83/9,146.94
6. Step 6: Final answer
   x = 7,131.77