Finding the Fourth Proportional to 5,258.37, 7,256.61 and 2,900.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,258.37 : 7,256.61 = 2,900.61 : x
2. Step 2: Convert to fraction form
   5,258.37/7,256.61 = 2,900.61/x
3. Step 3: Cross multiply
   5,258.37x = 7,256.61 × 2,900.61
4. Step 4: Simplify right side
   5,258.37x = 21,048,595.53
5. Step 5: Solve for x
   x = 21,048,595.53/5,258.37
6. Step 6: Final answer
   x = 4,002.87