Finding the Fourth Proportional to 21,755.00, 30,011.76 and 12,796.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,755.00 : 30,011.76 = 12,796.80 : x
2. Step 2: Convert to fraction form
   21,755.00/30,011.76 = 12,796.80/x
3. Step 3: Cross multiply
   21,755.00x = 30,011.76 × 12,796.80
4. Step 4: Simplify right side
   21,755.00x = 384,054,490.37
5. Step 5: Solve for x
   x = 384,054,490.37/21,755.00
6. Step 6: Final answer
   x = 17,653.62