Finding the Fourth Proportional to 9,145.74, 12,622.32 and 5,168.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,145.74 : 12,622.32 = 5,168.10 : x
2. Step 2: Convert to fraction form
   9,145.74/12,622.32 = 5,168.10/x
3. Step 3: Cross multiply
   9,145.74x = 12,622.32 × 5,168.10
4. Step 4: Simplify right side
   9,145.74x = 65,233,411.99
5. Step 5: Solve for x
   x = 65,233,411.99/9,145.74
6. Step 6: Final answer
   x = 7,132.66