Finding the Fourth Proportional to 10,221.59, 14,105.92 and 5,745.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,221.59 : 14,105.92 = 5,745.08 : x
2. Step 2: Convert to fraction form
   10,221.59/14,105.92 = 5,745.08/x
3. Step 3: Cross multiply
   10,221.59x = 14,105.92 × 5,745.08
4. Step 4: Simplify right side
   10,221.59x = 81,039,638.87
5. Step 5: Solve for x
   x = 81,039,638.87/10,221.59
6. Step 6: Final answer
   x = 7,928.28