Finding the Fourth Proportional to 3,749.69, 5,172.53 and 2,613.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,749.69 : 5,172.53 = 2,613.56 : x
2. Step 2: Convert to fraction form
   3,749.69/5,172.53 = 2,613.56/x
3. Step 3: Cross multiply
   3,749.69x = 5,172.53 × 2,613.56
4. Step 4: Simplify right side
   3,749.69x = 13,518,678.58
5. Step 5: Solve for x
   x = 13,518,678.58/3,749.69
6. Step 6: Final answer
   x = 3,605.28