Finding the Fourth Proportional to 10,115.89, 15,164.03 and 3,871.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,115.89 : 15,164.03 = 3,871.09 : x
2. Step 2: Convert to fraction form
   10,115.89/15,164.03 = 3,871.09/x
3. Step 3: Cross multiply
   10,115.89x = 15,164.03 × 3,871.09
4. Step 4: Simplify right side
   10,115.89x = 58,701,324.89
5. Step 5: Solve for x
   x = 58,701,324.89/10,115.89
6. Step 6: Final answer
   x = 5,802.88