Finding the Fourth Proportional to 9,147.02, 12,622.77 and 5,168.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.02 : 12,622.77 = 5,168.09 : x
2. Step 2: Convert to fraction form
   9,147.02/12,622.77 = 5,168.09/x
3. Step 3: Cross multiply
   9,147.02x = 12,622.77 × 5,168.09
4. Step 4: Simplify right side
   9,147.02x = 65,235,611.41
5. Step 5: Solve for x
   x = 65,235,611.41/9,147.02
6. Step 6: Final answer
   x = 7,131.90