Finding the Fourth Proportional to 3,818.96, 5,725.52 and 2,645.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,818.96 : 5,725.52 = 2,645.58 : x
2. Step 2: Convert to fraction form
   3,818.96/5,725.52 = 2,645.58/x
3. Step 3: Cross multiply
   3,818.96x = 5,725.52 × 2,645.58
4. Step 4: Simplify right side
   3,818.96x = 15,147,321.20
5. Step 5: Solve for x
   x = 15,147,321.20/3,818.96
6. Step 6: Final answer
   x = 3,966.35