Finding the Fourth Proportional to 22,309.59, 30,786.15 and 12,881.19

Step by Step Solution

1. Step 1: Write the proportion equation
   22,309.59 : 30,786.15 = 12,881.19 : x
2. Step 2: Convert to fraction form
   22,309.59/30,786.15 = 12,881.19/x
3. Step 3: Cross multiply
   22,309.59x = 30,786.15 × 12,881.19
4. Step 4: Simplify right side
   22,309.59x = 396,562,247.52
5. Step 5: Solve for x
   x = 396,562,247.52/22,309.59
6. Step 6: Final answer
   x = 17,775.42