Finding the Fourth Proportional to 25,496.37, 38,189.10 and 12,321

Step by Step Solution

1. Step 1: Write the proportion equation
   25,496.37 : 38,189.10 = 12,321 : x
2. Step 2: Convert to fraction form
   25,496.37/38,189.10 = 12,321/x
3. Step 3: Cross multiply
   25,496.37x = 38,189.10 × 12,321
4. Step 4: Simplify right side
   25,496.37x = 470,527,901.10
5. Step 5: Solve for x
   x = 470,527,901.10/25,496.37
6. Step 6: Final answer
   x = 18,454.70