Finding the Fourth Proportional to 10,111.72, 13,954.18 and 5,863.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.72 : 13,954.18 = 5,863.60 : x
2. Step 2: Convert to fraction form
   10,111.72/13,954.18 = 5,863.60/x
3. Step 3: Cross multiply
   10,111.72x = 13,954.18 × 5,863.60
4. Step 4: Simplify right side
   10,111.72x = 81,821,729.85
5. Step 5: Solve for x
   x = 81,821,729.85/10,111.72
6. Step 6: Final answer
   x = 8,091.77