Finding the Fourth Proportional to 22,398.79, 30,910.55 and 12,327.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,398.79 : 30,910.55 = 12,327.47 : x
2. Step 2: Convert to fraction form
   22,398.79/30,910.55 = 12,327.47/x
3. Step 3: Cross multiply
   22,398.79x = 30,910.55 × 12,327.47
4. Step 4: Simplify right side
   22,398.79x = 381,048,742.60
5. Step 5: Solve for x
   x = 381,048,742.60/22,398.79
6. Step 6: Final answer
   x = 17,012.02