Finding the Fourth Proportional to 12,129.57, 18,192.33 and 3,362.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,129.57 : 18,192.33 = 3,362.13 : x
2. Step 2: Convert to fraction form
   12,129.57/18,192.33 = 3,362.13/x
3. Step 3: Cross multiply
   12,129.57x = 18,192.33 × 3,362.13
4. Step 4: Simplify right side
   12,129.57x = 61,164,978.46
5. Step 5: Solve for x
   x = 61,164,978.46/12,129.57
6. Step 6: Final answer
   x = 5,042.63