Finding the Fourth Proportional to 7,017.84, 10,518.12 and 3,553.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,017.84 : 10,518.12 = 3,553.20 : x
2. Step 2: Convert to fraction form
   7,017.84/10,518.12 = 3,553.20/x
3. Step 3: Cross multiply
   7,017.84x = 10,518.12 × 3,553.20
4. Step 4: Simplify right side
   7,017.84x = 37,372,983.98
5. Step 5: Solve for x
   x = 37,372,983.98/7,017.84
6. Step 6: Final answer
   x = 5,325.43