Finding the Fourth Proportional to 12,968.80, 17,900.46 and 7,665.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,968.80 : 17,900.46 = 7,665.52 : x
2. Step 2: Convert to fraction form
   12,968.80/17,900.46 = 7,665.52/x
3. Step 3: Cross multiply
   12,968.80x = 17,900.46 × 7,665.52
4. Step 4: Simplify right side
   12,968.80x = 137,216,334.14
5. Step 5: Solve for x
   x = 137,216,334.14/12,968.80
6. Step 6: Final answer
   x = 10,580.50