Finding the Fourth Proportional to 20,505.20, 30,759.32 and 7,357.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,505.20 : 30,759.32 = 7,357.69 : x
2. Step 2: Convert to fraction form
   20,505.20/30,759.32 = 7,357.69/x
3. Step 3: Cross multiply
   20,505.20x = 30,759.32 × 7,357.69
4. Step 4: Simplify right side
   20,505.20x = 226,317,350.59
5. Step 5: Solve for x
   x = 226,317,350.59/20,505.20
6. Step 6: Final answer
   x = 11,037.07