Finding the Fourth Proportional to 23,167.38, 31,971 and 12,557.01

Step by Step Solution

1. Step 1: Write the proportion equation
   23,167.38 : 31,971 = 12,557.01 : x
2. Step 2: Convert to fraction form
   23,167.38/31,971 = 12,557.01/x
3. Step 3: Cross multiply
   23,167.38x = 31,971 × 12,557.01
4. Step 4: Simplify right side
   23,167.38x = 401,460,166.71
5. Step 5: Solve for x
   x = 401,460,166.71/23,167.38
6. Step 6: Final answer
   x = 17,328.68