Finding the Fourth Proportional to 9,147.32, 12,622.74 and 5,168.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.32 : 12,622.74 = 5,168.60 : x
2. Step 2: Convert to fraction form
   9,147.32/12,622.74 = 5,168.60/x
3. Step 3: Cross multiply
   9,147.32x = 12,622.74 × 5,168.60
4. Step 4: Simplify right side
   9,147.32x = 65,241,893.96
5. Step 5: Solve for x
   x = 65,241,893.96/9,147.32
6. Step 6: Final answer
   x = 7,132.35