Finding the Fourth Proportional to 17,211.69, 23,749.23 and 10,139.52

Step by Step Solution

1. Step 1: Write the proportion equation
   17,211.69 : 23,749.23 = 10,139.52 : x
2. Step 2: Convert to fraction form
   17,211.69/23,749.23 = 10,139.52/x
3. Step 3: Cross multiply
   17,211.69x = 23,749.23 × 10,139.52
4. Step 4: Simplify right side
   17,211.69x = 240,805,792.57
5. Step 5: Solve for x
   x = 240,805,792.57/17,211.69
6. Step 6: Final answer
   x = 13,990.83