Finding the Fourth Proportional to 21,778.56, 30,053.52 and 12,346.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,778.56 : 30,053.52 = 12,346.56 : x
2. Step 2: Convert to fraction form
   21,778.56/30,053.52 = 12,346.56/x
3. Step 3: Cross multiply
   21,778.56x = 30,053.52 × 12,346.56
4. Step 4: Simplify right side
   21,778.56x = 371,057,587.89
5. Step 5: Solve for x
   x = 371,057,587.89/21,778.56
6. Step 6: Final answer
   x = 17,037.75