Finding the Fourth Proportional to 3,985.05, 5,976.77 and 3,787.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.05 : 5,976.77 = 3,787.47 : x
2. Step 2: Convert to fraction form
   3,985.05/5,976.77 = 3,787.47/x
3. Step 3: Cross multiply
   3,985.05x = 5,976.77 × 3,787.47
4. Step 4: Simplify right side
   3,985.05x = 22,636,788.25
5. Step 5: Solve for x
   x = 22,636,788.25/3,985.05
6. Step 6: Final answer
   x = 5,680.42