Finding the Fourth Proportional to 30,604.51, 45,900.72 and 8,412.16

Step by Step Solution

1. Step 1: Write the proportion equation
   30,604.51 : 45,900.72 = 8,412.16 : x
2. Step 2: Convert to fraction form
   30,604.51/45,900.72 = 8,412.16/x
3. Step 3: Cross multiply
   30,604.51x = 45,900.72 × 8,412.16
4. Step 4: Simplify right side
   30,604.51x = 386,124,200.76
5. Step 5: Solve for x
   x = 386,124,200.76/30,604.51
6. Step 6: Final answer
   x = 12,616.58