Finding the Fourth Proportional to 10,923.30, 16,391.16 and 4,258.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,923.30 : 16,391.16 = 4,258.94 : x
2. Step 2: Convert to fraction form
   10,923.30/16,391.16 = 4,258.94/x
3. Step 3: Cross multiply
   10,923.30x = 16,391.16 × 4,258.94
4. Step 4: Simplify right side
   10,923.30x = 69,808,885.01
5. Step 5: Solve for x
   x = 69,808,885.01/10,923.30
6. Step 6: Final answer
   x = 6,390.82