Finding the Fourth Proportional to 9,182.79, 12,672.56 and 5,149.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,182.79 : 12,672.56 = 5,149.78 : x
2. Step 2: Convert to fraction form
   9,182.79/12,672.56 = 5,149.78/x
3. Step 3: Cross multiply
   9,182.79x = 12,672.56 × 5,149.78
4. Step 4: Simplify right side
   9,182.79x = 65,260,896.04
5. Step 5: Solve for x
   x = 65,260,896.04/9,182.79
6. Step 6: Final answer
   x = 7,106.87