Finding the Fourth Proportional to 12,404.43, 18,590.79 and 5,816.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.43 : 18,590.79 = 5,816.10 : x
2. Step 2: Convert to fraction form
   12,404.43/18,590.79 = 5,816.10/x
3. Step 3: Cross multiply
   12,404.43x = 18,590.79 × 5,816.10
4. Step 4: Simplify right side
   12,404.43x = 108,125,893.72
5. Step 5: Solve for x
   x = 108,125,893.72/12,404.43
6. Step 6: Final answer
   x = 8,716.72