Finding the Fourth Proportional to 17,086.97, 23,590.70 and 13,100.42

Step by Step Solution

1. Step 1: Write the proportion equation
   17,086.97 : 23,590.70 = 13,100.42 : x
2. Step 2: Convert to fraction form
   17,086.97/23,590.70 = 13,100.42/x
3. Step 3: Cross multiply
   17,086.97x = 23,590.70 × 13,100.42
4. Step 4: Simplify right side
   17,086.97x = 309,047,894.64
5. Step 5: Solve for x
   x = 309,047,894.64/17,086.97
6. Step 6: Final answer
   x = 18,086.76