Finding the Fourth Proportional to 23,168.34, 31,972.28 and 12,557.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.34 : 31,972.28 = 12,557.96 : x
2. Step 2: Convert to fraction form
   23,168.34/31,972.28 = 12,557.96/x
3. Step 3: Cross multiply
   23,168.34x = 31,972.28 × 12,557.96
4. Step 4: Simplify right side
   23,168.34x = 401,506,613.35
5. Step 5: Solve for x
   x = 401,506,613.35/23,168.34
6. Step 6: Final answer
   x = 17,329.97