Finding the Fourth Proportional to 30,123.50, 45,194.36 and 10,404.05

Step by Step Solution

1. Step 1: Write the proportion equation
   30,123.50 : 45,194.36 = 10,404.05 : x
2. Step 2: Convert to fraction form
   30,123.50/45,194.36 = 10,404.05/x
3. Step 3: Cross multiply
   30,123.50x = 45,194.36 × 10,404.05
4. Step 4: Simplify right side
   30,123.50x = 470,204,103.17
5. Step 5: Solve for x
   x = 470,204,103.17/30,123.50
6. Step 6: Final answer
   x = 15,609.21