Finding the Fourth Proportional to 3,675.18, 5,081.72 and 3,615.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,675.18 : 5,081.72 = 3,615.83 : x
2. Step 2: Convert to fraction form
   3,675.18/5,081.72 = 3,615.83/x
3. Step 3: Cross multiply
   3,675.18x = 5,081.72 × 3,615.83
4. Step 4: Simplify right side
   3,675.18x = 18,374,635.63
5. Step 5: Solve for x
   x = 18,374,635.63/3,675.18
6. Step 6: Final answer
   x = 4,999.66