Finding the Fourth Proportional to 12,966.27, 19,451.83 and 5,175.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,966.27 : 19,451.83 = 5,175.15 : x
2. Step 2: Convert to fraction form
   12,966.27/19,451.83 = 5,175.15/x
3. Step 3: Cross multiply
   12,966.27x = 19,451.83 × 5,175.15
4. Step 4: Simplify right side
   12,966.27x = 100,666,138.02
5. Step 5: Solve for x
   x = 100,666,138.02/12,966.27
6. Step 6: Final answer
   x = 7,763.69