Finding the Fourth Proportional to 22,938.48, 31,659.57 and 13,379.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,938.48 : 31,659.57 = 13,379.49 : x
2. Step 2: Convert to fraction form
   22,938.48/31,659.57 = 13,379.49/x
3. Step 3: Cross multiply
   22,938.48x = 31,659.57 × 13,379.49
4. Step 4: Simplify right side
   22,938.48x = 423,588,900.22
5. Step 5: Solve for x
   x = 423,588,900.22/22,938.48
6. Step 6: Final answer
   x = 18,466.30