Finding the Fourth Proportional to 7,817.82, 10,789.18 and 5,160.62

Step by Step Solution

1. Step 1: Write the proportion equation
   7,817.82 : 10,789.18 = 5,160.62 : x
2. Step 2: Convert to fraction form
   7,817.82/10,789.18 = 5,160.62/x
3. Step 3: Cross multiply
   7,817.82x = 10,789.18 × 5,160.62
4. Step 4: Simplify right side
   7,817.82x = 55,678,858.09
5. Step 5: Solve for x
   x = 55,678,858.09/7,817.82
6. Step 6: Final answer
   x = 7,122.04