Finding the Fourth Proportional to 7,079.61, 10,609.34 and 5,216.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,079.61 : 10,609.34 = 5,216.07 : x
2. Step 2: Convert to fraction form
   7,079.61/10,609.34 = 5,216.07/x
3. Step 3: Cross multiply
   7,079.61x = 10,609.34 × 5,216.07
4. Step 4: Simplify right side
   7,079.61x = 55,339,060.09
5. Step 5: Solve for x
   x = 55,339,060.09/7,079.61
6. Step 6: Final answer
   x = 7,816.68