Finding the Fourth Proportional to 21,777.38, 30,053.39 and 12,346.55

Step by Step Solution

1. Step 1: Write the proportion equation
   21,777.38 : 30,053.39 = 12,346.55 : x
2. Step 2: Convert to fraction form
   21,777.38/30,053.39 = 12,346.55/x
3. Step 3: Cross multiply
   21,777.38x = 30,053.39 × 12,346.55
4. Step 4: Simplify right side
   21,777.38x = 371,055,470.30
5. Step 5: Solve for x
   x = 371,055,470.30/21,777.38
6. Step 6: Final answer
   x = 17,038.58