Finding the Fourth Proportional to 3,348.72, 5,003.85 and 2,553.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,348.72 : 5,003.85 = 2,553.69 : x
2. Step 2: Convert to fraction form
   3,348.72/5,003.85 = 2,553.69/x
3. Step 3: Cross multiply
   3,348.72x = 5,003.85 × 2,553.69
4. Step 4: Simplify right side
   3,348.72x = 12,778,281.71
5. Step 5: Solve for x
   x = 12,778,281.71/3,348.72
6. Step 6: Final answer
   x = 3,815.87