Finding the Fourth Proportional to 17,146.03, 23,669.61 and 12,898.71

Step by Step Solution

1. Step 1: Write the proportion equation
   17,146.03 : 23,669.61 = 12,898.71 : x
2. Step 2: Convert to fraction form
   17,146.03/23,669.61 = 12,898.71/x
3. Step 3: Cross multiply
   17,146.03x = 23,669.61 × 12,898.71
4. Step 4: Simplify right side
   17,146.03x = 305,307,367.50
5. Step 5: Solve for x
   x = 305,307,367.50/17,146.03
6. Step 6: Final answer
   x = 17,806.30