Finding the Fourth Proportional to 12,791.79, 17,653.96 and 7,127.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791.79 : 17,653.96 = 7,127.46 : x
2. Step 2: Convert to fraction form
   12,791.79/17,653.96 = 7,127.46/x
3. Step 3: Cross multiply
   12,791.79x = 17,653.96 × 7,127.46
4. Step 4: Simplify right side
   12,791.79x = 125,827,769.83
5. Step 5: Solve for x
   x = 125,827,769.83/12,791.79
6. Step 6: Final answer
   x = 9,836.61