Finding the Fourth Proportional to 5,259.80, 7,258.52 and 2,902.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,259.80 : 7,258.52 = 2,902.10 : x
2. Step 2: Convert to fraction form
   5,259.80/7,258.52 = 2,902.10/x
3. Step 3: Cross multiply
   5,259.80x = 7,258.52 × 2,902.10
4. Step 4: Simplify right side
   5,259.80x = 21,064,921.85
5. Step 5: Solve for x
   x = 21,064,921.85/5,259.80
6. Step 6: Final answer
   x = 4,004.89