Finding the Fourth Proportional to 5,258.30, 7,256.31 and 2,900.29

Step by Step Solution

1. Step 1: Write the proportion equation
   5,258.30 : 7,256.31 = 2,900.29 : x
2. Step 2: Convert to fraction form
   5,258.30/7,256.31 = 2,900.29/x
3. Step 3: Cross multiply
   5,258.30x = 7,256.31 × 2,900.29
4. Step 4: Simplify right side
   5,258.30x = 21,045,367.05
5. Step 5: Solve for x
   x = 21,045,367.05/5,258.30
6. Step 6: Final answer
   x = 4,002.31