Finding the Fourth Proportional to 7,810.31, 10,778.23 and 4,273.55

Step by Step Solution

1. Step 1: Write the proportion equation
   7,810.31 : 10,778.23 = 4,273.55 : x
2. Step 2: Convert to fraction form
   7,810.31/10,778.23 = 4,273.55/x
3. Step 3: Cross multiply
   7,810.31x = 10,778.23 × 4,273.55
4. Step 4: Simplify right side
   7,810.31x = 46,061,296.69
5. Step 5: Solve for x
   x = 46,061,296.69/7,810.31
6. Step 6: Final answer
   x = 5,897.50