Finding the Fourth Proportional to 10,435.56, 15,653.31 and 2,644.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,435.56 : 15,653.31 = 2,644.35 : x
2. Step 2: Convert to fraction form
   10,435.56/15,653.31 = 2,644.35/x
3. Step 3: Cross multiply
   10,435.56x = 15,653.31 × 2,644.35
4. Step 4: Simplify right side
   10,435.56x = 41,392,830.30
5. Step 5: Solve for x
   x = 41,392,830.30/10,435.56
6. Step 6: Final answer
   x = 3,966.52