Finding the Fourth Proportional to 6,806.42, 10,213.52 and 2,645.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,806.42 : 10,213.52 = 2,645.89 : x
2. Step 2: Convert to fraction form
   6,806.42/10,213.52 = 2,645.89/x
3. Step 3: Cross multiply
   6,806.42x = 10,213.52 × 2,645.89
4. Step 4: Simplify right side
   6,806.42x = 27,023,850.43
5. Step 5: Solve for x
   x = 27,023,850.43/6,806.42
6. Step 6: Final answer
   x = 3,970.35