Finding the Fourth Proportional to 23,168.35, 31,972.35 and 12,557.89

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.35 : 31,972.35 = 12,557.89 : x
2. Step 2: Convert to fraction form
   23,168.35/31,972.35 = 12,557.89/x
3. Step 3: Cross multiply
   23,168.35x = 31,972.35 × 12,557.89
4. Step 4: Simplify right side
   23,168.35x = 401,505,254.34
5. Step 5: Solve for x
   x = 401,505,254.34/23,168.35
6. Step 6: Final answer
   x = 17,329.90