Finding the Fourth Proportional to 10,089.50, 15,138.61 and 3,851.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089.50 : 15,138.61 = 3,851.39 : x
2. Step 2: Convert to fraction form
   10,089.50/15,138.61 = 3,851.39/x
3. Step 3: Cross multiply
   10,089.50x = 15,138.61 × 3,851.39
4. Step 4: Simplify right side
   10,089.50x = 58,304,719.39
5. Step 5: Solve for x
   x = 58,304,719.39/10,089.50
6. Step 6: Final answer
   x = 5,778.75