Finding the Fourth Proportional to 12,296.76, 18,430.71 and 5,709.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,296.76 : 18,430.71 = 5,709.07 : x
2. Step 2: Convert to fraction form
   12,296.76/18,430.71 = 5,709.07/x
3. Step 3: Cross multiply
   12,296.76x = 18,430.71 × 5,709.07
4. Step 4: Simplify right side
   12,296.76x = 105,222,213.54
5. Step 5: Solve for x
   x = 105,222,213.54/12,296.76
6. Step 6: Final answer
   x = 8,556.91