Finding the Fourth Proportional to 12,385.51, 18,584.34 and 5,812.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.51 : 18,584.34 = 5,812.23 : x
2. Step 2: Convert to fraction form
   12,385.51/18,584.34 = 5,812.23/x
3. Step 3: Cross multiply
   12,385.51x = 18,584.34 × 5,812.23
4. Step 4: Simplify right side
   12,385.51x = 108,016,458.48
5. Step 5: Solve for x
   x = 108,016,458.48/12,385.51
6. Step 6: Final answer
   x = 8,721.20