Finding the Fourth Proportional to 13,362.69, 18,455.67 and 9,106.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,362.69 : 18,455.67 = 9,106.47 : x
2. Step 2: Convert to fraction form
   13,362.69/18,455.67 = 9,106.47/x
3. Step 3: Cross multiply
   13,362.69x = 18,455.67 × 9,106.47
4. Step 4: Simplify right side
   13,362.69x = 168,065,978.89
5. Step 5: Solve for x
   x = 168,065,978.89/13,362.69
6. Step 6: Final answer
   x = 12,577.26