Finding the Fourth Proportional to 12,129.24, 18,196.52 and 10,904.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,129.24 : 18,196.52 = 10,904.52 : x
2. Step 2: Convert to fraction form
   12,129.24/18,196.52 = 10,904.52/x
3. Step 3: Cross multiply
   12,129.24x = 18,196.52 × 10,904.52
4. Step 4: Simplify right side
   12,129.24x = 198,424,316.27
5. Step 5: Solve for x
   x = 198,424,316.27/12,129.24
6. Step 6: Final answer
   x = 16,359.17