Finding the Fourth Proportional to 10,111.21, 13,953.50 and 5,863.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.21 : 13,953.50 = 5,863.10 : x
2. Step 2: Convert to fraction form
   10,111.21/13,953.50 = 5,863.10/x
3. Step 3: Cross multiply
   10,111.21x = 13,953.50 × 5,863.10
4. Step 4: Simplify right side
   10,111.21x = 81,810,765.85
5. Step 5: Solve for x
   x = 81,810,765.85/10,111.21
6. Step 6: Final answer
   x = 8,091.10