Finding the Fourth Proportional to 5,259.72, 7,885.43 and 2,625.87

Step by Step Solution

1. Step 1: Write the proportion equation
   5,259.72 : 7,885.43 = 2,625.87 : x
2. Step 2: Convert to fraction form
   5,259.72/7,885.43 = 2,625.87/x
3. Step 3: Cross multiply
   5,259.72x = 7,885.43 × 2,625.87
4. Step 4: Simplify right side
   5,259.72x = 20,706,100.94
5. Step 5: Solve for x
   x = 20,706,100.94/5,259.72
6. Step 6: Final answer
   x = 3,936.73