Finding the Fourth Proportional to 12,931.69, 17,845.75 and 7,342.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931.69 : 17,845.75 = 7,342.69 : x
2. Step 2: Convert to fraction form
   12,931.69/17,845.75 = 7,342.69/x
3. Step 3: Cross multiply
   12,931.69x = 17,845.75 × 7,342.69
4. Step 4: Simplify right side
   12,931.69x = 131,035,747.10
5. Step 5: Solve for x
   x = 131,035,747.10/12,931.69
6. Step 6: Final answer
   x = 10,132.92