Finding the Fourth Proportional to 12,141.62, 18,192.38 and 5,553.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,141.62 : 18,192.38 = 5,553.29 : x
2. Step 2: Convert to fraction form
   12,141.62/18,192.38 = 5,553.29/x
3. Step 3: Cross multiply
   12,141.62x = 18,192.38 × 5,553.29
4. Step 4: Simplify right side
   12,141.62x = 101,027,443.20
5. Step 5: Solve for x
   x = 101,027,443.20/12,141.62
6. Step 6: Final answer
   x = 8,320.76