Finding the Fourth Proportional to 13,162.23, 18,152.12 and 10,920.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,162.23 : 18,152.12 = 10,920.56 : x
2. Step 2: Convert to fraction form
   13,162.23/18,152.12 = 10,920.56/x
3. Step 3: Cross multiply
   13,162.23x = 18,152.12 × 10,920.56
4. Step 4: Simplify right side
   13,162.23x = 198,231,224.83
5. Step 5: Solve for x
   x = 198,231,224.83/13,162.23
6. Step 6: Final answer
   x = 15,060.61