Finding the Fourth Proportional to 10,662.24, 14,716.08 and 7,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,662.24 : 14,716.08 = 7,122.72 : x
2. Step 2: Convert to fraction form
   10,662.24/14,716.08 = 7,122.72/x
3. Step 3: Cross multiply
   10,662.24x = 14,716.08 × 7,122.72
4. Step 4: Simplify right side
   10,662.24x = 104,818,517.34
5. Step 5: Solve for x
   x = 104,818,517.34/10,662.24
6. Step 6: Final answer
   x = 9,830.82