Finding the Fourth Proportional to 10,810.76, 14,920.49 and 7,825.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,810.76 : 14,920.49 = 7,825.51 : x
2. Step 2: Convert to fraction form
   10,810.76/14,920.49 = 7,825.51/x
3. Step 3: Cross multiply
   10,810.76x = 14,920.49 × 7,825.51
4. Step 4: Simplify right side
   10,810.76x = 116,760,443.70
5. Step 5: Solve for x
   x = 116,760,443.70/10,810.76
6. Step 6: Final answer
   x = 10,800.39