Finding the Fourth Proportional to 12,128.48, 16,736.94 and 7,351.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,128.48 : 16,736.94 = 7,351.25 : x
2. Step 2: Convert to fraction form
   12,128.48/16,736.94 = 7,351.25/x
3. Step 3: Cross multiply
   12,128.48x = 16,736.94 × 7,351.25
4. Step 4: Simplify right side
   12,128.48x = 123,037,430.18
5. Step 5: Solve for x
   x = 123,037,430.18/12,128.48
6. Step 6: Final answer
   x = 10,144.51