Finding the Fourth Proportional to 6,621.94, 9,142.56 and 4,106.73

Step by Step Solution

1. Step 1: Write the proportion equation
   6,621.94 : 9,142.56 = 4,106.73 : x
2. Step 2: Convert to fraction form
   6,621.94/9,142.56 = 4,106.73/x
3. Step 3: Cross multiply
   6,621.94x = 9,142.56 × 4,106.73
4. Step 4: Simplify right side
   6,621.94x = 37,546,025.43
5. Step 5: Solve for x
   x = 37,546,025.43/6,621.94
6. Step 6: Final answer
   x = 5,669.94