Finding the Fourth Proportional to 7,016.11, 10,522.10 and 5,780.45

Step by Step Solution

1. Step 1: Write the proportion equation
   7,016.11 : 10,522.10 = 5,780.45 : x
2. Step 2: Convert to fraction form
   7,016.11/10,522.10 = 5,780.45/x
3. Step 3: Cross multiply
   7,016.11x = 10,522.10 × 5,780.45
4. Step 4: Simplify right side
   7,016.11x = 60,822,513.70
5. Step 5: Solve for x
   x = 60,822,513.70/7,016.11
6. Step 6: Final answer
   x = 8,668.98