Finding the Fourth Proportional to 22,333.39, 30,820.56 and 12,774.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,333.39 : 30,820.56 = 12,774.15 : x
2. Step 2: Convert to fraction form
   22,333.39/30,820.56 = 12,774.15/x
3. Step 3: Cross multiply
   22,333.39x = 30,820.56 × 12,774.15
4. Step 4: Simplify right side
   22,333.39x = 393,706,456.52
5. Step 5: Solve for x
   x = 393,706,456.52/22,333.39
6. Step 6: Final answer
   x = 17,628.60