Finding the Fourth Proportional to 3,787.62, 5,214.15 and 3,123.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,787.62 : 5,214.15 = 3,123.42 : x
2. Step 2: Convert to fraction form
   3,787.62/5,214.15 = 3,123.42/x
3. Step 3: Cross multiply
   3,787.62x = 5,214.15 × 3,123.42
4. Step 4: Simplify right side
   3,787.62x = 16,285,980.39
5. Step 5: Solve for x
   x = 16,285,980.39/3,787.62
6. Step 6: Final answer
   x = 4,299.79