Finding the Fourth Proportional to 8,834.96, 13,240.56 and 7,172.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,834.96 : 13,240.56 = 7,172.88 : x
2. Step 2: Convert to fraction form
   8,834.96/13,240.56 = 7,172.88/x
3. Step 3: Cross multiply
   8,834.96x = 13,240.56 × 7,172.88
4. Step 4: Simplify right side
   8,834.96x = 94,972,948.01
5. Step 5: Solve for x
   x = 94,972,948.01/8,834.96
6. Step 6: Final answer
   x = 10,749.67