Finding the Fourth Proportional to 6,761.48, 10,140.39 and 3,061.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,761.48 : 10,140.39 = 3,061.80 : x
2. Step 2: Convert to fraction form
   6,761.48/10,140.39 = 3,061.80/x
3. Step 3: Cross multiply
   6,761.48x = 10,140.39 × 3,061.80
4. Step 4: Simplify right side
   6,761.48x = 31,047,846.10
5. Step 5: Solve for x
   x = 31,047,846.10/6,761.48
6. Step 6: Final answer
   x = 4,591.87