Finding the Fourth Proportional to 7,807.65, 10,779.01 and 5,162.73

Step by Step Solution

1. Step 1: Write the proportion equation
   7,807.65 : 10,779.01 = 5,162.73 : x
2. Step 2: Convert to fraction form
   7,807.65/10,779.01 = 5,162.73/x
3. Step 3: Cross multiply
   7,807.65x = 10,779.01 × 5,162.73
4. Step 4: Simplify right side
   7,807.65x = 55,649,118.30
5. Step 5: Solve for x
   x = 55,649,118.30/7,807.65
6. Step 6: Final answer
   x = 7,127.51