Finding the Fourth Proportional to 12,945.04, 17,864.28 and 7,356.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,945.04 : 17,864.28 = 7,356.08 : x
2. Step 2: Convert to fraction form
   12,945.04/17,864.28 = 7,356.08/x
3. Step 3: Cross multiply
   12,945.04x = 17,864.28 × 7,356.08
4. Step 4: Simplify right side
   12,945.04x = 131,411,072.82
5. Step 5: Solve for x
   x = 131,411,072.82/12,945.04
6. Step 6: Final answer
   x = 10,151.46