Finding the Fourth Proportional to 23,167.53, 31,971.31 and 12,557.07

Step by Step Solution

1. Step 1: Write the proportion equation
   23,167.53 : 31,971.31 = 12,557.07 : x
2. Step 2: Convert to fraction form
   23,167.53/31,971.31 = 12,557.07/x
3. Step 3: Cross multiply
   23,167.53x = 31,971.31 × 12,557.07
4. Step 4: Simplify right side
   23,167.53x = 401,465,946.27
5. Step 5: Solve for x
   x = 401,465,946.27/23,167.53
6. Step 6: Final answer
   x = 17,328.82