Finding the Fourth Proportional to 10,679.16, 14,729.46 and 7,136.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,679.16 : 14,729.46 = 7,136.16 : x
2. Step 2: Convert to fraction form
   10,679.16/14,729.46 = 7,136.16/x
3. Step 3: Cross multiply
   10,679.16x = 14,729.46 × 7,136.16
4. Step 4: Simplify right side
   10,679.16x = 105,111,783.27
5. Step 5: Solve for x
   x = 105,111,783.27/10,679.16
6. Step 6: Final answer
   x = 9,842.70