Finding the Fourth Proportional to 12,170.96, 18,263.61 and 5,150.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,170.96 : 18,263.61 = 5,150.42 : x
2. Step 2: Convert to fraction form
   12,170.96/18,263.61 = 5,150.42/x
3. Step 3: Cross multiply
   12,170.96x = 18,263.61 × 5,150.42
4. Step 4: Simplify right side
   12,170.96x = 94,065,170.90
5. Step 5: Solve for x
   x = 94,065,170.90/12,170.96
6. Step 6: Final answer
   x = 7,728.66