Finding the Fourth Proportional to 10,778.69, 14,873.56 and 7,947.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,778.69 : 14,873.56 = 7,947.60 : x
2. Step 2: Convert to fraction form
   10,778.69/14,873.56 = 7,947.60/x
3. Step 3: Cross multiply
   10,778.69x = 14,873.56 × 7,947.60
4. Step 4: Simplify right side
   10,778.69x = 118,209,070.19
5. Step 5: Solve for x
   x = 118,209,070.19/10,778.69
6. Step 6: Final answer
   x = 10,966.92