Finding the Fourth Proportional to 12,407, 18,604.61 and 4,811.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,407 : 18,604.61 = 4,811.83 : x
2. Step 2: Convert to fraction form
   12,407/18,604.61 = 4,811.83/x
3. Step 3: Cross multiply
   12,407x = 18,604.61 × 4,811.83
4. Step 4: Simplify right side
   12,407x = 89,522,220.54
5. Step 5: Solve for x
   x = 89,522,220.54/12,407
6. Step 6: Final answer
   x = 7,215.46