Finding the Fourth Proportional to 7,087.92, 9,782.28 and 5,316.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,087.92 : 9,782.28 = 5,316.72 : x
2. Step 2: Convert to fraction form
   7,087.92/9,782.28 = 5,316.72/x
3. Step 3: Cross multiply
   7,087.92x = 9,782.28 × 5,316.72
4. Step 4: Simplify right side
   7,087.92x = 52,009,643.72
5. Step 5: Solve for x
   x = 52,009,643.72/7,087.92
6. Step 6: Final answer
   x = 7,337.79