Finding the Fourth Proportional to 6,449.87, 8,902.73 and 4,212.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,449.87 : 8,902.73 = 4,212.10 : x
2. Step 2: Convert to fraction form
   6,449.87/8,902.73 = 4,212.10/x
3. Step 3: Cross multiply
   6,449.87x = 8,902.73 × 4,212.10
4. Step 4: Simplify right side
   6,449.87x = 37,499,189.03
5. Step 5: Solve for x
   x = 37,499,189.03/6,449.87
6. Step 6: Final answer
   x = 5,813.94