Finding the Fourth Proportional to 22,928.67, 31,640.42 and 13,496.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,928.67 : 31,640.42 = 13,496.63 : x
2. Step 2: Convert to fraction form
   22,928.67/31,640.42 = 13,496.63/x
3. Step 3: Cross multiply
   22,928.67x = 31,640.42 × 13,496.63
4. Step 4: Simplify right side
   22,928.67x = 427,038,917.32
5. Step 5: Solve for x
   x = 427,038,917.32/22,928.67
6. Step 6: Final answer
   x = 18,624.67