Finding the Fourth Proportional to 10,143.99, 15,208.80 and 3,898.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,143.99 : 15,208.80 = 3,898.73 : x
2. Step 2: Convert to fraction form
   10,143.99/15,208.80 = 3,898.73/x
3. Step 3: Cross multiply
   10,143.99x = 15,208.80 × 3,898.73
4. Step 4: Simplify right side
   10,143.99x = 59,294,928.78
5. Step 5: Solve for x
   x = 59,294,928.78/10,143.99
6. Step 6: Final answer
   x = 5,845.33