Finding the Fourth Proportional to 9,146.70, 12,621.69 and 5,168.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.70 : 12,621.69 = 5,168.52 : x
2. Step 2: Convert to fraction form
   9,146.70/12,621.69 = 5,168.52/x
3. Step 3: Cross multiply
   9,146.70x = 12,621.69 × 5,168.52
4. Step 4: Simplify right side
   9,146.70x = 65,235,457.20
5. Step 5: Solve for x
   x = 65,235,457.20/9,146.70
6. Step 6: Final answer
   x = 7,132.13