Finding the Fourth Proportional to 10,997.85, 16,465.31 and 7,292.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.85 : 16,465.31 = 7,292.71 : x
2. Step 2: Convert to fraction form
   10,997.85/16,465.31 = 7,292.71/x
3. Step 3: Cross multiply
   10,997.85x = 16,465.31 × 7,292.71
4. Step 4: Simplify right side
   10,997.85x = 120,076,730.89
5. Step 5: Solve for x
   x = 120,076,730.89/10,997.85
6. Step 6: Final answer
   x = 10,918.20