Finding the Fourth Proportional to 8,085.42, 12,128.94 and 3,642.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,085.42 : 12,128.94 = 3,642.84 : x
2. Step 2: Convert to fraction form
   8,085.42/12,128.94 = 3,642.84/x
3. Step 3: Cross multiply
   8,085.42x = 12,128.94 × 3,642.84
4. Step 4: Simplify right side
   8,085.42x = 44,183,787.79
5. Step 5: Solve for x
   x = 44,183,787.79/8,085.42
6. Step 6: Final answer
   x = 5,464.62