Finding the Fourth Proportional to 10,765.08, 16,155.72 and 5,221.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,765.08 : 16,155.72 = 5,221.62 : x
2. Step 2: Convert to fraction form
   10,765.08/16,155.72 = 5,221.62/x
3. Step 3: Cross multiply
   10,765.08x = 16,155.72 × 5,221.62
4. Step 4: Simplify right side
   10,765.08x = 84,359,030.67
5. Step 5: Solve for x
   x = 84,359,030.67/10,765.08
6. Step 6: Final answer
   x = 7,836.36