Finding the Fourth Proportional to 10,162.27, 15,225.94 and 9,135.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,162.27 : 15,225.94 = 9,135.10 : x
2. Step 2: Convert to fraction form
   10,162.27/15,225.94 = 9,135.10/x
3. Step 3: Cross multiply
   10,162.27x = 15,225.94 × 9,135.10
4. Step 4: Simplify right side
   10,162.27x = 139,090,484.49
5. Step 5: Solve for x
   x = 139,090,484.49/10,162.27
6. Step 6: Final answer
   x = 13,686.95