Finding the Fourth Proportional to 22,943.50, 31,667.25 and 13,515.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,943.50 : 31,667.25 = 13,515.10 : x
2. Step 2: Convert to fraction form
   22,943.50/31,667.25 = 13,515.10/x
3. Step 3: Cross multiply
   22,943.50x = 31,667.25 × 13,515.10
4. Step 4: Simplify right side
   22,943.50x = 427,986,050.48
5. Step 5: Solve for x
   x = 427,986,050.48/22,943.50
6. Step 6: Final answer
   x = 18,653.91