Finding the Fourth Proportional to 10,622.72, 14,652.42 and 7,085.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,622.72 : 14,652.42 = 7,085.72 : x
2. Step 2: Convert to fraction form
   10,622.72/14,652.42 = 7,085.72/x
3. Step 3: Cross multiply
   10,622.72x = 14,652.42 × 7,085.72
4. Step 4: Simplify right side
   10,622.72x = 103,822,945.44
5. Step 5: Solve for x
   x = 103,822,945.44/10,622.72
6. Step 6: Final answer
   x = 9,773.67