Finding the Fourth Proportional to 7,807.15, 10,778.32 and 5,162.23

Step by Step Solution

1. Step 1: Write the proportion equation
   7,807.15 : 10,778.32 = 5,162.23 : x
2. Step 2: Convert to fraction form
   7,807.15/10,778.32 = 5,162.23/x
3. Step 3: Cross multiply
   7,807.15x = 10,778.32 × 5,162.23
4. Step 4: Simplify right side
   7,807.15x = 55,640,146.36
5. Step 5: Solve for x
   x = 55,640,146.36/7,807.15
6. Step 6: Final answer
   x = 7,126.82