Finding the Fourth Proportional to 23,136.78, 31,929.41 and 13,066.73

Step by Step Solution

1. Step 1: Write the proportion equation
   23,136.78 : 31,929.41 = 13,066.73 : x
2. Step 2: Convert to fraction form
   23,136.78/31,929.41 = 13,066.73/x
3. Step 3: Cross multiply
   23,136.78x = 31,929.41 × 13,066.73
4. Step 4: Simplify right side
   23,136.78x = 417,212,754.55
5. Step 5: Solve for x
   x = 417,212,754.55/23,136.78
6. Step 6: Final answer
   x = 18,032.45