Finding the Fourth Proportional to 23,124.35, 31,911.45 and 12,513.89

Step by Step Solution

1. Step 1: Write the proportion equation
   23,124.35 : 31,911.45 = 12,513.89 : x
2. Step 2: Convert to fraction form
   23,124.35/31,911.45 = 12,513.89/x
3. Step 3: Cross multiply
   23,124.35x = 31,911.45 × 12,513.89
4. Step 4: Simplify right side
   23,124.35x = 399,336,375.04
5. Step 5: Solve for x
   x = 399,336,375.04/23,124.35
6. Step 6: Final answer
   x = 17,269.09