Finding the Fourth Proportional to 14,864.94, 20,513.61 and 8,404.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,864.94 : 20,513.61 = 8,404.20 : x
2. Step 2: Convert to fraction form
   14,864.94/20,513.61 = 8,404.20/x
3. Step 3: Cross multiply
   14,864.94x = 20,513.61 × 8,404.20
4. Step 4: Simplify right side
   14,864.94x = 172,400,481.16
5. Step 5: Solve for x
   x = 172,400,481.16/14,864.94
6. Step 6: Final answer
   x = 11,597.79