Finding the Fourth Proportional to 10,910.27, 15,060.56 and 7,136.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,910.27 : 15,060.56 = 7,136.78 : x
2. Step 2: Convert to fraction form
   10,910.27/15,060.56 = 7,136.78/x
3. Step 3: Cross multiply
   10,910.27x = 15,060.56 × 7,136.78
4. Step 4: Simplify right side
   10,910.27x = 107,483,867.71
5. Step 5: Solve for x
   x = 107,483,867.71/10,910.27
6. Step 6: Final answer
   x = 9,851.62