Finding the Fourth Proportional to 22,158, 30,578.04 and 13,774.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,158 : 30,578.04 = 13,774.48 : x
2. Step 2: Convert to fraction form
   22,158/30,578.04 = 13,774.48/x
3. Step 3: Cross multiply
   22,158x = 30,578.04 × 13,774.48
4. Step 4: Simplify right side
   22,158x = 421,196,600.42
5. Step 5: Solve for x
   x = 421,196,600.42/22,158
6. Step 6: Final answer
   x = 19,008.78