Finding the Fourth Proportional to 9,146.71, 12,622.39 and 5,168.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.71 : 12,622.39 = 5,168.60 : x
2. Step 2: Convert to fraction form
   9,146.71/12,622.39 = 5,168.60/x
3. Step 3: Cross multiply
   9,146.71x = 12,622.39 × 5,168.60
4. Step 4: Simplify right side
   9,146.71x = 65,240,084.95
5. Step 5: Solve for x
   x = 65,240,084.95/9,146.71
6. Step 6: Final answer
   x = 7,132.63