Finding the Fourth Proportional to 10,622.94, 15,941.46 and 7,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,622.94 : 15,941.46 = 7,116.72 : x
2. Step 2: Convert to fraction form
   10,622.94/15,941.46 = 7,116.72/x
3. Step 3: Cross multiply
   10,622.94x = 15,941.46 × 7,116.72
4. Step 4: Simplify right side
   10,622.94x = 113,450,907.21
5. Step 5: Solve for x
   x = 113,450,907.21/10,622.94
6. Step 6: Final answer
   x = 10,679.80