Finding the Fourth Proportional to 22,149, 30,566.12 and 12,587.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,149 : 30,566.12 = 12,587.38 : x
2. Step 2: Convert to fraction form
   22,149/30,566.12 = 12,587.38/x
3. Step 3: Cross multiply
   22,149x = 30,566.12 × 12,587.38
4. Step 4: Simplify right side
   22,149x = 384,747,367.57
5. Step 5: Solve for x
   x = 384,747,367.57/22,149
6. Step 6: Final answer
   x = 17,370.87