Finding the Fourth Proportional to 3,619.98, 5,432.72 and 2,386.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,619.98 : 5,432.72 = 2,386.98 : x
2. Step 2: Convert to fraction form
   3,619.98/5,432.72 = 2,386.98/x
3. Step 3: Cross multiply
   3,619.98x = 5,432.72 × 2,386.98
4. Step 4: Simplify right side
   3,619.98x = 12,967,782.05
5. Step 5: Solve for x
   x = 12,967,782.05/3,619.98
6. Step 6: Final answer
   x = 3,582.28