Finding the Fourth Proportional to 2,500.21, 3,720.81 and 2,417.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.21 : 3,720.81 = 2,417.15 : x
2. Step 2: Convert to fraction form
   2,500.21/3,720.81 = 2,417.15/x
3. Step 3: Cross multiply
   2,500.21x = 3,720.81 × 2,417.15
4. Step 4: Simplify right side
   2,500.21x = 8,993,743.81
5. Step 5: Solve for x
   x = 8,993,743.81/2,500.21
6. Step 6: Final answer
   x = 3,597.20