Finding the Fourth Proportional to 21,944.89, 32,911.05 and 7,155.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,944.89 : 32,911.05 = 7,155.10 : x
2. Step 2: Convert to fraction form
   21,944.89/32,911.05 = 7,155.10/x
3. Step 3: Cross multiply
   21,944.89x = 32,911.05 × 7,155.10
4. Step 4: Simplify right side
   21,944.89x = 235,481,853.86
5. Step 5: Solve for x
   x = 235,481,853.86/21,944.89
6. Step 6: Final answer
   x = 10,730.60