Finding the Fourth Proportional to 10,949.40, 16,420.05 and 3,554.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,949.40 : 16,420.05 = 3,554.10 : x
2. Step 2: Convert to fraction form
   10,949.40/16,420.05 = 3,554.10/x
3. Step 3: Cross multiply
   10,949.40x = 16,420.05 × 3,554.10
4. Step 4: Simplify right side
   10,949.40x = 58,358,499.71
5. Step 5: Solve for x
   x = 58,358,499.71/10,949.40
6. Step 6: Final answer
   x = 5,329.84