Finding the Fourth Proportional to 17,442, 24,070.32 and 9,990

Step by Step Solution

1. Step 1: Write the proportion equation
   17,442 : 24,070.32 = 9,990 : x
2. Step 2: Convert to fraction form
   17,442/24,070.32 = 9,990/x
3. Step 3: Cross multiply
   17,442x = 24,070.32 × 9,990
4. Step 4: Simplify right side
   17,442x = 240,462,496.80
5. Step 5: Solve for x
   x = 240,462,496.80/17,442
6. Step 6: Final answer
   x = 13,786.41