Finding the Fourth Proportional to 3,780.50, 5,648.34 and 3,651.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.50 : 5,648.34 = 3,651.30 : x
2. Step 2: Convert to fraction form
   3,780.50/5,648.34 = 3,651.30/x
3. Step 3: Cross multiply
   3,780.50x = 5,648.34 × 3,651.30
4. Step 4: Simplify right side
   3,780.50x = 20,623,783.84
5. Step 5: Solve for x
   x = 20,623,783.84/3,780.50
6. Step 6: Final answer
   x = 5,455.31