Finding the Fourth Proportional to 12,369.86, 18,555.06 and 7,443.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,369.86 : 18,555.06 = 7,443.62 : x
2. Step 2: Convert to fraction form
   12,369.86/18,555.06 = 7,443.62/x
3. Step 3: Cross multiply
   12,369.86x = 18,555.06 × 7,443.62
4. Step 4: Simplify right side
   12,369.86x = 138,116,815.72
5. Step 5: Solve for x
   x = 138,116,815.72/12,369.86
6. Step 6: Final answer
   x = 11,165.59