Finding the Fourth Proportional to 5,275.82, 7,280.60 and 2,917.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,275.82 : 7,280.60 = 2,917.91 : x
2. Step 2: Convert to fraction form
   5,275.82/7,280.60 = 2,917.91/x
3. Step 3: Cross multiply
   5,275.82x = 7,280.60 × 2,917.91
4. Step 4: Simplify right side
   5,275.82x = 21,244,084.55
5. Step 5: Solve for x
   x = 21,244,084.55/5,275.82
6. Step 6: Final answer
   x = 4,026.69