Finding the Fourth Proportional to 11,002.96, 16,503.10 and 3,211.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,002.96 : 16,503.10 = 3,211.78 : x
2. Step 2: Convert to fraction form
   11,002.96/16,503.10 = 3,211.78/x
3. Step 3: Cross multiply
   11,002.96x = 16,503.10 × 3,211.78
4. Step 4: Simplify right side
   11,002.96x = 53,004,326.52
5. Step 5: Solve for x
   x = 53,004,326.52/11,002.96
6. Step 6: Final answer
   x = 4,817.28