Finding the Fourth Proportional to 5,276.05, 7,280.71 and 2,885.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,276.05 : 7,280.71 = 2,885.98 : x
2. Step 2: Convert to fraction form
   5,276.05/7,280.71 = 2,885.98/x
3. Step 3: Cross multiply
   5,276.05x = 7,280.71 × 2,885.98
4. Step 4: Simplify right side
   5,276.05x = 21,011,983.45
5. Step 5: Solve for x
   x = 21,011,983.45/5,276.05
6. Step 6: Final answer
   x = 3,982.52