Finding the Fourth Proportional to 22,828.34, 31,503.94 and 13,399.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,828.34 : 31,503.94 = 13,399.94 : x
2. Step 2: Convert to fraction form
   22,828.34/31,503.94 = 13,399.94/x
3. Step 3: Cross multiply
   22,828.34x = 31,503.94 × 13,399.94
4. Step 4: Simplify right side
   22,828.34x = 422,150,905.76
5. Step 5: Solve for x
   x = 422,150,905.76/22,828.34
6. Step 6: Final answer
   x = 18,492.40