Finding the Fourth Proportional to 12,672.60, 17,485.38 and 7,955.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,672.60 : 17,485.38 = 7,955.16 : x
2. Step 2: Convert to fraction form
   12,672.60/17,485.38 = 7,955.16/x
3. Step 3: Cross multiply
   12,672.60x = 17,485.38 × 7,955.16
4. Step 4: Simplify right side
   12,672.60x = 139,098,995.56
5. Step 5: Solve for x
   x = 139,098,995.56/12,672.60
6. Step 6: Final answer
   x = 10,976.36