Finding the Fourth Proportional to 23,128.27, 31,895.35 and 15,353.33

Step by Step Solution

1. Step 1: Write the proportion equation
   23,128.27 : 31,895.35 = 15,353.33 : x
2. Step 2: Convert to fraction form
   23,128.27/31,895.35 = 15,353.33/x
3. Step 3: Cross multiply
   23,128.27x = 31,895.35 × 15,353.33
4. Step 4: Simplify right side
   23,128.27x = 489,699,834.02
5. Step 5: Solve for x
   x = 489,699,834.02/23,128.27
6. Step 6: Final answer
   x = 21,173.22