Finding the Fourth Proportional to 23,092.42, 31,866.91 and 13,020.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,092.42 : 31,866.91 = 13,020.78 : x
2. Step 2: Convert to fraction form
   23,092.42/31,866.91 = 13,020.78/x
3. Step 3: Cross multiply
   23,092.42x = 31,866.91 × 13,020.78
4. Step 4: Simplify right side
   23,092.42x = 414,932,024.39
5. Step 5: Solve for x
   x = 414,932,024.39/23,092.42
6. Step 6: Final answer
   x = 17,968.32