Finding the Fourth Proportional to 10,885.98, 16,328.70 and 3,490.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,885.98 : 16,328.70 = 3,490.96 : x
2. Step 2: Convert to fraction form
   10,885.98/16,328.70 = 3,490.96/x
3. Step 3: Cross multiply
   10,885.98x = 16,328.70 × 3,490.96
4. Step 4: Simplify right side
   10,885.98x = 57,002,838.55
5. Step 5: Solve for x
   x = 57,002,838.55/10,885.98
6. Step 6: Final answer
   x = 5,236.35