Finding the Fourth Proportional to 13,510.42, 20,227.49 and 7,170.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,510.42 : 20,227.49 = 7,170.96 : x
2. Step 2: Convert to fraction form
   13,510.42/20,227.49 = 7,170.96/x
3. Step 3: Cross multiply
   13,510.42x = 20,227.49 × 7,170.96
4. Step 4: Simplify right side
   13,510.42x = 145,050,521.69
5. Step 5: Solve for x
   x = 145,050,521.69/13,510.42
6. Step 6: Final answer
   x = 10,736.20