Finding the Fourth Proportional to 7,820.08, 10,790.52 and 5,168.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,820.08 : 10,790.52 = 5,168.56 : x
2. Step 2: Convert to fraction form
   7,820.08/10,790.52 = 5,168.56/x
3. Step 3: Cross multiply
   7,820.08x = 10,790.52 × 5,168.56
4. Step 4: Simplify right side
   7,820.08x = 55,771,450.05
5. Step 5: Solve for x
   x = 55,771,450.05/7,820.08
6. Step 6: Final answer
   x = 7,131.83