Finding the Fourth Proportional to 12,596.40, 18,857.34 and 7,651.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,596.40 : 18,857.34 = 7,651.08 : x
2. Step 2: Convert to fraction form
   12,596.40/18,857.34 = 7,651.08/x
3. Step 3: Cross multiply
   12,596.40x = 18,857.34 × 7,651.08
4. Step 4: Simplify right side
   12,596.40x = 144,279,016.93
5. Step 5: Solve for x
   x = 144,279,016.93/12,596.40
6. Step 6: Final answer
   x = 11,453.99