Finding the Fourth Proportional to 5,257.89, 7,255.89 and 2,899.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,257.89 : 7,255.89 = 2,899.98 : x
2. Step 2: Convert to fraction form
   5,257.89/7,255.89 = 2,899.98/x
3. Step 3: Cross multiply
   5,257.89x = 7,255.89 × 2,899.98
4. Step 4: Simplify right side
   5,257.89x = 21,041,935.88
5. Step 5: Solve for x
   x = 21,041,935.88/5,257.89
6. Step 6: Final answer
   x = 4,001.97