Finding the Fourth Proportional to 9,629.64, 13,291.32 and 5,440.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,629.64 : 13,291.32 = 5,440.32 : x
2. Step 2: Convert to fraction form
   9,629.64/13,291.32 = 5,440.32/x
3. Step 3: Cross multiply
   9,629.64x = 13,291.32 × 5,440.32
4. Step 4: Simplify right side
   9,629.64x = 72,309,034.02
5. Step 5: Solve for x
   x = 72,309,034.02/9,629.64
6. Step 6: Final answer
   x = 7,509.01