Finding the Fourth Proportional to 12,647.70, 17,453.79 and 7,345.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,647.70 : 17,453.79 = 7,345.62 : x
2. Step 2: Convert to fraction form
   12,647.70/17,453.79 = 7,345.62/x
3. Step 3: Cross multiply
   12,647.70x = 17,453.79 × 7,345.62
4. Step 4: Simplify right side
   12,647.70x = 128,208,908.90
5. Step 5: Solve for x
   x = 128,208,908.90/12,647.70
6. Step 6: Final answer
   x = 10,136.93