Finding the Fourth Proportional to 6,627.66, 9,142.37 and 4,139.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,627.66 : 9,142.37 = 4,139.34 : x
2. Step 2: Convert to fraction form
   6,627.66/9,142.37 = 4,139.34/x
3. Step 3: Cross multiply
   6,627.66x = 9,142.37 × 4,139.34
4. Step 4: Simplify right side
   6,627.66x = 37,843,357.14
5. Step 5: Solve for x
   x = 37,843,357.14/6,627.66
6. Step 6: Final answer
   x = 5,709.91