Finding the Fourth Proportional to 12,400.42, 18,584.80 and 5,812.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,400.42 : 18,584.80 = 5,812.09 : x
2. Step 2: Convert to fraction form
   12,400.42/18,584.80 = 5,812.09/x
3. Step 3: Cross multiply
   12,400.42x = 18,584.80 × 5,812.09
4. Step 4: Simplify right side
   12,400.42x = 108,016,530.23
5. Step 5: Solve for x
   x = 108,016,530.23/12,400.42
6. Step 6: Final answer
   x = 8,710.72