Finding the Fourth Proportional to 5,251.83, 7,882.61 and 2,656.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,251.83 : 7,882.61 = 2,656.59 : x
2. Step 2: Convert to fraction form
   5,251.83/7,882.61 = 2,656.59/x
3. Step 3: Cross multiply
   5,251.83x = 7,882.61 × 2,656.59
4. Step 4: Simplify right side
   5,251.83x = 20,940,849.62
5. Step 5: Solve for x
   x = 20,940,849.62/5,251.83
6. Step 6: Final answer
   x = 3,987.34