Finding the Fourth Proportional to 12,645.28, 17,450.72 and 7,343.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,645.28 : 17,450.72 = 7,343.04 : x
2. Step 2: Convert to fraction form
   12,645.28/17,450.72 = 7,343.04/x
3. Step 3: Cross multiply
   12,645.28x = 17,450.72 × 7,343.04
4. Step 4: Simplify right side
   12,645.28x = 128,141,334.99
5. Step 5: Solve for x
   x = 128,141,334.99/12,645.28
6. Step 6: Final answer
   x = 10,133.53