Finding the Fourth Proportional to 20,111.61, 27,753.99 and 12,152.34

Step by Step Solution

1. Step 1: Write the proportion equation
   20,111.61 : 27,753.99 = 12,152.34 : x
2. Step 2: Convert to fraction form
   20,111.61/27,753.99 = 12,152.34/x
3. Step 3: Cross multiply
   20,111.61x = 27,753.99 × 12,152.34
4. Step 4: Simplify right side
   20,111.61x = 337,275,922.84
5. Step 5: Solve for x
   x = 337,275,922.84/20,111.61
6. Step 6: Final answer
   x = 16,770.21