Finding the Fourth Proportional to 17,396.29, 23,980.69 and 13,612.88

Step by Step Solution

1. Step 1: Write the proportion equation
   17,396.29 : 23,980.69 = 13,612.88 : x
2. Step 2: Convert to fraction form
   17,396.29/23,980.69 = 13,612.88/x
3. Step 3: Cross multiply
   17,396.29x = 23,980.69 × 13,612.88
4. Step 4: Simplify right side
   17,396.29x = 326,446,255.29
5. Step 5: Solve for x
   x = 326,446,255.29/17,396.29
6. Step 6: Final answer
   x = 18,765.28