Finding the Fourth Proportional to 10,954.84, 16,429.70 and 3,557.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,954.84 : 16,429.70 = 3,557.40 : x
2. Step 2: Convert to fraction form
   10,954.84/16,429.70 = 3,557.40/x
3. Step 3: Cross multiply
   10,954.84x = 16,429.70 × 3,557.40
4. Step 4: Simplify right side
   10,954.84x = 58,447,014.78
5. Step 5: Solve for x
   x = 58,447,014.78/10,954.84
6. Step 6: Final answer
   x = 5,335.27