Finding the Fourth Proportional to 23,167.56, 31,971.28 and 12,557.19

Step by Step Solution

1. Step 1: Write the proportion equation
   23,167.56 : 31,971.28 = 12,557.19 : x
2. Step 2: Convert to fraction form
   23,167.56/31,971.28 = 12,557.19/x
3. Step 3: Cross multiply
   23,167.56x = 31,971.28 × 12,557.19
4. Step 4: Simplify right side
   23,167.56x = 401,469,437.50
5. Step 5: Solve for x
   x = 401,469,437.50/23,167.56
6. Step 6: Final answer
   x = 17,328.95