Finding the Fourth Proportional to 9,640.56, 14,449.60 and 4,435.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640.56 : 14,449.60 = 4,435.44 : x
2. Step 2: Convert to fraction form
   9,640.56/14,449.60 = 4,435.44/x
3. Step 3: Cross multiply
   9,640.56x = 14,449.60 × 4,435.44
4. Step 4: Simplify right side
   9,640.56x = 64,090,333.82
5. Step 5: Solve for x
   x = 64,090,333.82/9,640.56
6. Step 6: Final answer
   x = 6,647.99