Finding the Fourth Proportional to 5,876.69, 8,120.54 and 4,280.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,876.69 : 8,120.54 = 4,280.56 : x
2. Step 2: Convert to fraction form
   5,876.69/8,120.54 = 4,280.56/x
3. Step 3: Cross multiply
   5,876.69x = 8,120.54 × 4,280.56
4. Step 4: Simplify right side
   5,876.69x = 34,760,449.10
5. Step 5: Solve for x
   x = 34,760,449.10/5,876.69
6. Step 6: Final answer
   x = 5,914.98