Finding the Fourth Proportional to 7,945.18, 10,942.14 and 7,772.99

Step by Step Solution

1. Step 1: Write the proportion equation
   7,945.18 : 10,942.14 = 7,772.99 : x
2. Step 2: Convert to fraction form
   7,945.18/10,942.14 = 7,772.99/x
3. Step 3: Cross multiply
   7,945.18x = 10,942.14 × 7,772.99
4. Step 4: Simplify right side
   7,945.18x = 85,053,144.80
5. Step 5: Solve for x
   x = 85,053,144.80/7,945.18
6. Step 6: Final answer
   x = 10,705.00