Finding the Fourth Proportional to 3,971.34, 5,480.55 and 2,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,971.34 : 5,480.55 = 2,398.50 : x
2. Step 2: Convert to fraction form
   3,971.34/5,480.55 = 2,398.50/x
3. Step 3: Cross multiply
   3,971.34x = 5,480.55 × 2,398.50
4. Step 4: Simplify right side
   3,971.34x = 13,145,099.18
5. Step 5: Solve for x
   x = 13,145,099.18/3,971.34
6. Step 6: Final answer
   x = 3,309.99