Finding the Fourth Proportional to 10,399.54, 15,605.49 and 3,830.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,399.54 : 15,605.49 = 3,830.34 : x
2. Step 2: Convert to fraction form
   10,399.54/15,605.49 = 3,830.34/x
3. Step 3: Cross multiply
   10,399.54x = 15,605.49 × 3,830.34
4. Step 4: Simplify right side
   10,399.54x = 59,774,332.57
5. Step 5: Solve for x
   x = 59,774,332.57/10,399.54
6. Step 6: Final answer
   x = 5,747.79