Finding the Fourth Proportional to 12,665.15, 17,468.56 and 11,231.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.15 : 17,468.56 = 11,231.25 : x
2. Step 2: Convert to fraction form
   12,665.15/17,468.56 = 11,231.25/x
3. Step 3: Cross multiply
   12,665.15x = 17,468.56 × 11,231.25
4. Step 4: Simplify right side
   12,665.15x = 196,193,764.50
5. Step 5: Solve for x
   x = 196,193,764.50/12,665.15
6. Step 6: Final answer
   x = 15,490.84