Finding the Fourth Proportional to 5,673.30, 7,830.78 and 3,787.62

Step by Step Solution

1. Step 1: Write the proportion equation
   5,673.30 : 7,830.78 = 3,787.62 : x
2. Step 2: Convert to fraction form
   5,673.30/7,830.78 = 3,787.62/x
3. Step 3: Cross multiply
   5,673.30x = 7,830.78 × 3,787.62
4. Step 4: Simplify right side
   5,673.30x = 29,660,018.94
5. Step 5: Solve for x
   x = 29,660,018.94/5,673.30
6. Step 6: Final answer
   x = 5,228.00