Finding the Fourth Proportional to 17,215.59, 23,747.91 and 10,839.81

Step by Step Solution

1. Step 1: Write the proportion equation
   17,215.59 : 23,747.91 = 10,839.81 : x
2. Step 2: Convert to fraction form
   17,215.59/23,747.91 = 10,839.81/x
3. Step 3: Cross multiply
   17,215.59x = 23,747.91 × 10,839.81
4. Step 4: Simplify right side
   17,215.59x = 257,422,832.30
5. Step 5: Solve for x
   x = 257,422,832.30/17,215.59
6. Step 6: Final answer
   x = 14,952.89