Finding the Fourth Proportional to 16,665.36, 25,010.32 and 7,900.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,665.36 : 25,010.32 = 7,900.24 : x
2. Step 2: Convert to fraction form
   16,665.36/25,010.32 = 7,900.24/x
3. Step 3: Cross multiply
   16,665.36x = 25,010.32 × 7,900.24
4. Step 4: Simplify right side
   16,665.36x = 197,587,530.48
5. Step 5: Solve for x
   x = 197,587,530.48/16,665.36
6. Step 6: Final answer
   x = 11,856.18