Finding the Fourth Proportional to 3,613.59, 4,987.31 and 2,623.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.59 : 4,987.31 = 2,623.37 : x
2. Step 2: Convert to fraction form
   3,613.59/4,987.31 = 2,623.37/x
3. Step 3: Cross multiply
   3,613.59x = 4,987.31 × 2,623.37
4. Step 4: Simplify right side
   3,613.59x = 13,083,521.38
5. Step 5: Solve for x
   x = 13,083,521.38/3,613.59
6. Step 6: Final answer
   x = 3,620.64