Finding the Fourth Proportional to 3,625.52, 5,439.72 and 3,619.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,625.52 : 5,439.72 = 3,619.76 : x
2. Step 2: Convert to fraction form
   3,625.52/5,439.72 = 3,619.76/x
3. Step 3: Cross multiply
   3,625.52x = 5,439.72 × 3,619.76
4. Step 4: Simplify right side
   3,625.52x = 19,690,480.87
5. Step 5: Solve for x
   x = 19,690,480.87/3,625.52
6. Step 6: Final answer
   x = 5,431.08