Finding the Fourth Proportional to 8,150.74, 12,228.55 and 4,685.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,150.74 : 12,228.55 = 4,685.56 : x
2. Step 2: Convert to fraction form
   8,150.74/12,228.55 = 4,685.56/x
3. Step 3: Cross multiply
   8,150.74x = 12,228.55 × 4,685.56
4. Step 4: Simplify right side
   8,150.74x = 57,297,657.59
5. Step 5: Solve for x
   x = 57,297,657.59/8,150.74
6. Step 6: Final answer
   x = 7,029.75