Finding the Fourth Proportional to 7,680.15, 10,592.96 and 5,290.92

Step by Step Solution

1. Step 1: Write the proportion equation
   7,680.15 : 10,592.96 = 5,290.92 : x
2. Step 2: Convert to fraction form
   7,680.15/10,592.96 = 5,290.92/x
3. Step 3: Cross multiply
   7,680.15x = 10,592.96 × 5,290.92
4. Step 4: Simplify right side
   7,680.15x = 56,046,477.47
5. Step 5: Solve for x
   x = 56,046,477.47/7,680.15
6. Step 6: Final answer
   x = 7,297.58