Finding the Fourth Proportional to 12,604.86, 18,912.69 and 5,214.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,604.86 : 18,912.69 = 5,214.69 : x
2. Step 2: Convert to fraction form
   12,604.86/18,912.69 = 5,214.69/x
3. Step 3: Cross multiply
   12,604.86x = 18,912.69 × 5,214.69
4. Step 4: Simplify right side
   12,604.86x = 98,623,815.42
5. Step 5: Solve for x
   x = 98,623,815.42/12,604.86
6. Step 6: Final answer
   x = 7,824.27