Finding the Fourth Proportional to 16,865.20, 23,274.30 and 9,789.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,865.20 : 23,274.30 = 9,789.04 : x
2. Step 2: Convert to fraction form
   16,865.20/23,274.30 = 9,789.04/x
3. Step 3: Cross multiply
   16,865.20x = 23,274.30 × 9,789.04
4. Step 4: Simplify right side
   16,865.20x = 227,833,053.67
5. Step 5: Solve for x
   x = 227,833,053.67/16,865.20
6. Step 6: Final answer
   x = 13,509.06