Finding the Fourth Proportional to 3,624.36, 5,429.22 and 2,388.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,624.36 : 5,429.22 = 2,388.72 : x
2. Step 2: Convert to fraction form
   3,624.36/5,429.22 = 2,388.72/x
3. Step 3: Cross multiply
   3,624.36x = 5,429.22 × 2,388.72
4. Step 4: Simplify right side
   3,624.36x = 12,968,886.40
5. Step 5: Solve for x
   x = 12,968,886.40/3,624.36
6. Step 6: Final answer
   x = 3,578.26