Finding the Fourth Proportional to 17,699.16, 24,446.52 and 13,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,699.16 : 24,446.52 = 13,242.72 : x
2. Step 2: Convert to fraction form
   17,699.16/24,446.52 = 13,242.72/x
3. Step 3: Cross multiply
   17,699.16x = 24,446.52 × 13,242.72
4. Step 4: Simplify right side
   17,699.16x = 323,738,419.33
5. Step 5: Solve for x
   x = 323,738,419.33/17,699.16
6. Step 6: Final answer
   x = 18,291.17