Finding the Fourth Proportional to 5,259.91, 7,258.76 and 2,902.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,259.91 : 7,258.76 = 2,902.05 : x
2. Step 2: Convert to fraction form
   5,259.91/7,258.76 = 2,902.05/x
3. Step 3: Cross multiply
   5,259.91x = 7,258.76 × 2,902.05
4. Step 4: Simplify right side
   5,259.91x = 21,065,284.46
5. Step 5: Solve for x
   x = 21,065,284.46/5,259.91
6. Step 6: Final answer
   x = 4,004.88