Finding the Fourth Proportional to 20,111.56, 27,754.70 and 12,152.25

Step by Step Solution

1. Step 1: Write the proportion equation
   20,111.56 : 27,754.70 = 12,152.25 : x
2. Step 2: Convert to fraction form
   20,111.56/27,754.70 = 12,152.25/x
3. Step 3: Cross multiply
   20,111.56x = 27,754.70 × 12,152.25
4. Step 4: Simplify right side
   20,111.56x = 337,282,053.08
5. Step 5: Solve for x
   x = 337,282,053.08/20,111.56
6. Step 6: Final answer
   x = 16,770.56