Finding the Fourth Proportional to 30,595.49, 45,892.69 and 8,408.78

Step by Step Solution

1. Step 1: Write the proportion equation
   30,595.49 : 45,892.69 = 8,408.78 : x
2. Step 2: Convert to fraction form
   30,595.49/45,892.69 = 8,408.78/x
3. Step 3: Cross multiply
   30,595.49x = 45,892.69 × 8,408.78
4. Step 4: Simplify right side
   30,595.49x = 385,901,533.82
5. Step 5: Solve for x
   x = 385,901,533.82/30,595.49
6. Step 6: Final answer
   x = 12,613.02