Finding the Fourth Proportional to 10,552.60, 14,568.42 and 7,021

Step by Step Solution

1. Step 1: Write the proportion equation
   10,552.60 : 14,568.42 = 7,021 : x
2. Step 2: Convert to fraction form
   10,552.60/14,568.42 = 7,021/x
3. Step 3: Cross multiply
   10,552.60x = 14,568.42 × 7,021
4. Step 4: Simplify right side
   10,552.60x = 102,284,876.82
5. Step 5: Solve for x
   x = 102,284,876.82/10,552.60
6. Step 6: Final answer
   x = 9,692.86