Finding the Fourth Proportional to 5,258.06, 7,255.83 and 2,900.21

Step by Step Solution

1. Step 1: Write the proportion equation
   5,258.06 : 7,255.83 = 2,900.21 : x
2. Step 2: Convert to fraction form
   5,258.06/7,255.83 = 2,900.21/x
3. Step 3: Cross multiply
   5,258.06x = 7,255.83 × 2,900.21
4. Step 4: Simplify right side
   5,258.06x = 21,043,389.01
5. Step 5: Solve for x
   x = 21,043,389.01/5,258.06
6. Step 6: Final answer
   x = 4,002.12