Finding the Fourth Proportional to 30,111.37, 41,530.29 and 20,558.94

Step by Step Solution

1. Step 1: Write the proportion equation
   30,111.37 : 41,530.29 = 20,558.94 : x
2. Step 2: Convert to fraction form
   30,111.37/41,530.29 = 20,558.94/x
3. Step 3: Cross multiply
   30,111.37x = 41,530.29 × 20,558.94
4. Step 4: Simplify right side
   30,111.37x = 853,818,740.29
5. Step 5: Solve for x
   x = 853,818,740.29/30,111.37
6. Step 6: Final answer
   x = 28,355.36