Finding the Fourth Proportional to 4,992.71, 6,890.37 and 3,003.21

Step by Step Solution

1. Step 1: Write the proportion equation
   4,992.71 : 6,890.37 = 3,003.21 : x
2. Step 2: Convert to fraction form
   4,992.71/6,890.37 = 3,003.21/x
3. Step 3: Cross multiply
   4,992.71x = 6,890.37 × 3,003.21
4. Step 4: Simplify right side
   4,992.71x = 20,693,216.83
5. Step 5: Solve for x
   x = 20,693,216.83/4,992.71
6. Step 6: Final answer
   x = 4,144.69