Finding the Fourth Proportional to 20,106.94, 30,150.82 and 9,013.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,106.94 : 30,150.82 = 9,013.72 : x
2. Step 2: Convert to fraction form
   20,106.94/30,150.82 = 9,013.72/x
3. Step 3: Cross multiply
   20,106.94x = 30,150.82 × 9,013.72
4. Step 4: Simplify right side
   20,106.94x = 271,771,049.25
5. Step 5: Solve for x
   x = 271,771,049.25/20,106.94
6. Step 6: Final answer
   x = 13,516.28