Finding the Fourth Proportional to 17,443.28, 24,071.20 and 9,890.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,443.28 : 24,071.20 = 9,890.30 : x
2. Step 2: Convert to fraction form
   17,443.28/24,071.20 = 9,890.30/x
3. Step 3: Cross multiply
   17,443.28x = 24,071.20 × 9,890.30
4. Step 4: Simplify right side
   17,443.28x = 238,071,389.36
5. Step 5: Solve for x
   x = 238,071,389.36/17,443.28
6. Step 6: Final answer
   x = 13,648.32