Finding the Fourth Proportional to 10,860.71, 14,967.27 and 8,704.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,860.71 : 14,967.27 = 8,704.80 : x
2. Step 2: Convert to fraction form
   10,860.71/14,967.27 = 8,704.80/x
3. Step 3: Cross multiply
   10,860.71x = 14,967.27 × 8,704.80
4. Step 4: Simplify right side
   10,860.71x = 130,287,091.90
5. Step 5: Solve for x
   x = 130,287,091.90/10,860.71
6. Step 6: Final answer
   x = 11,996.19