Finding the Fourth Proportional to 6,387.69, 8,820.60 and 4,297.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,387.69 : 8,820.60 = 4,297.89 : x
2. Step 2: Convert to fraction form
   6,387.69/8,820.60 = 4,297.89/x
3. Step 3: Cross multiply
   6,387.69x = 8,820.60 × 4,297.89
4. Step 4: Simplify right side
   6,387.69x = 37,909,968.53
5. Step 5: Solve for x
   x = 37,909,968.53/6,387.69
6. Step 6: Final answer
   x = 5,934.85