Finding the Fourth Proportional to 20,550.53, 30,828.89 and 7,399.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,550.53 : 30,828.89 = 7,399.82 : x
2. Step 2: Convert to fraction form
   20,550.53/30,828.89 = 7,399.82/x
3. Step 3: Cross multiply
   20,550.53x = 30,828.89 × 7,399.82
4. Step 4: Simplify right side
   20,550.53x = 228,128,332.37
5. Step 5: Solve for x
   x = 228,128,332.37/20,550.53
6. Step 6: Final answer
   x = 11,100.85