Finding the Fourth Proportional to 17,186.50, 23,699.38 and 12,719.62

Step by Step Solution

1. Step 1: Write the proportion equation
   17,186.50 : 23,699.38 = 12,719.62 : x
2. Step 2: Convert to fraction form
   17,186.50/23,699.38 = 12,719.62/x
3. Step 3: Cross multiply
   17,186.50x = 23,699.38 × 12,719.62
4. Step 4: Simplify right side
   17,186.50x = 301,446,960.43
5. Step 5: Solve for x
   x = 301,446,960.43/17,186.50
6. Step 6: Final answer
   x = 17,539.76