Finding the Fourth Proportional to 7,772.34, 10,734.74 and 5,131.54

Step by Step Solution

1. Step 1: Write the proportion equation
   7,772.34 : 10,734.74 = 5,131.54 : x
2. Step 2: Convert to fraction form
   7,772.34/10,734.74 = 5,131.54/x
3. Step 3: Cross multiply
   7,772.34x = 10,734.74 × 5,131.54
4. Step 4: Simplify right side
   7,772.34x = 55,085,747.70
5. Step 5: Solve for x
   x = 55,085,747.70/7,772.34
6. Step 6: Final answer
   x = 7,087.41