Finding the Fourth Proportional to 17,889.98, 24,671.16 and 13,040.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,889.98 : 24,671.16 = 13,040.30 : x
2. Step 2: Convert to fraction form
   17,889.98/24,671.16 = 13,040.30/x
3. Step 3: Cross multiply
   17,889.98x = 24,671.16 × 13,040.30
4. Step 4: Simplify right side
   17,889.98x = 321,719,327.75
5. Step 5: Solve for x
   x = 321,719,327.75/17,889.98
6. Step 6: Final answer
   x = 17,983.21