Finding the Fourth Proportional to 30,495.97, 45,739.33 and 8,311.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,495.97 : 45,739.33 = 8,311.12 : x
2. Step 2: Convert to fraction form
   30,495.97/45,739.33 = 8,311.12/x
3. Step 3: Cross multiply
   30,495.97x = 45,739.33 × 8,311.12
4. Step 4: Simplify right side
   30,495.97x = 380,144,925.22
5. Step 5: Solve for x
   x = 380,144,925.22/30,495.97
6. Step 6: Final answer
   x = 12,465.42