Finding the Fourth Proportional to 21,957.10, 30,300.74 and 11,885.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,957.10 : 30,300.74 = 11,885.52 : x
2. Step 2: Convert to fraction form
   21,957.10/30,300.74 = 11,885.52/x
3. Step 3: Cross multiply
   21,957.10x = 30,300.74 × 11,885.52
4. Step 4: Simplify right side
   21,957.10x = 360,140,051.28
5. Step 5: Solve for x
   x = 360,140,051.28/21,957.10
6. Step 6: Final answer
   x = 16,401.99