Finding the Fourth Proportional to 12,959.89, 19,435.92 and 3,597.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.89 : 19,435.92 = 3,597.64 : x
2. Step 2: Convert to fraction form
   12,959.89/19,435.92 = 3,597.64/x
3. Step 3: Cross multiply
   12,959.89x = 19,435.92 × 3,597.64
4. Step 4: Simplify right side
   12,959.89x = 69,923,443.23
5. Step 5: Solve for x
   x = 69,923,443.23/12,959.89
6. Step 6: Final answer
   x = 5,395.37