Finding the Fourth Proportional to 3,945.62, 5,925.15 and 3,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.62 : 5,925.15 = 3,780.50 : x
2. Step 2: Convert to fraction form
   3,945.62/5,925.15 = 3,780.50/x
3. Step 3: Cross multiply
   3,945.62x = 5,925.15 × 3,780.50
4. Step 4: Simplify right side
   3,945.62x = 22,400,029.58
5. Step 5: Solve for x
   x = 22,400,029.58/3,945.62
6. Step 6: Final answer
   x = 5,677.19