Finding the Fourth Proportional to 5,310.59, 7,328.70 and 2,920.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,310.59 : 7,328.70 = 2,920.82 : x
2. Step 2: Convert to fraction form
   5,310.59/7,328.70 = 2,920.82/x
3. Step 3: Cross multiply
   5,310.59x = 7,328.70 × 2,920.82
4. Step 4: Simplify right side
   5,310.59x = 21,405,776.89
5. Step 5: Solve for x
   x = 21,405,776.89/5,310.59
6. Step 6: Final answer
   x = 4,030.78