Finding the Fourth Proportional to 30,591, 45,885.94 and 8,404.28

Step by Step Solution

1. Step 1: Write the proportion equation
   30,591 : 45,885.94 = 8,404.28 : x
2. Step 2: Convert to fraction form
   30,591/45,885.94 = 8,404.28/x
3. Step 3: Cross multiply
   30,591x = 45,885.94 × 8,404.28
4. Step 4: Simplify right side
   30,591x = 385,638,287.82
5. Step 5: Solve for x
   x = 385,638,287.82/30,591
6. Step 6: Final answer
   x = 12,606.27