Finding the Fourth Proportional to 10,804.48, 14,914.24 and 7,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,804.48 : 14,914.24 = 7,078.72 : x
2. Step 2: Convert to fraction form
   10,804.48/14,914.24 = 7,078.72/x
3. Step 3: Cross multiply
   10,804.48x = 14,914.24 × 7,078.72
4. Step 4: Simplify right side
   10,804.48x = 105,573,728.97
5. Step 5: Solve for x
   x = 105,573,728.97/10,804.48
6. Step 6: Final answer
   x = 9,771.29