Finding the Fourth Proportional to 10,780.69, 14,876.32 and 7,949.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,780.69 : 14,876.32 = 7,949.60 : x
2. Step 2: Convert to fraction form
   10,780.69/14,876.32 = 7,949.60/x
3. Step 3: Cross multiply
   10,780.69x = 14,876.32 × 7,949.60
4. Step 4: Simplify right side
   10,780.69x = 118,260,793.47
5. Step 5: Solve for x
   x = 118,260,793.47/10,780.69
6. Step 6: Final answer
   x = 10,969.69