Finding the Fourth Proportional to 5,279.83, 7,920.89 and 1,582.39

Step by Step Solution

1. Step 1: Write the proportion equation
   5,279.83 : 7,920.89 = 1,582.39 : x
2. Step 2: Convert to fraction form
   5,279.83/7,920.89 = 1,582.39/x
3. Step 3: Cross multiply
   5,279.83x = 7,920.89 × 1,582.39
4. Step 4: Simplify right side
   5,279.83x = 12,533,900.50
5. Step 5: Solve for x
   x = 12,533,900.50/5,279.83
6. Step 6: Final answer
   x = 2,373.92