Finding the Fourth Proportional to 12,931.68, 17,843.76 and 7,342.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931.68 : 17,843.76 = 7,342.56 : x
2. Step 2: Convert to fraction form
   12,931.68/17,843.76 = 7,342.56/x
3. Step 3: Cross multiply
   12,931.68x = 17,843.76 × 7,342.56
4. Step 4: Simplify right side
   12,931.68x = 131,018,878.43
5. Step 5: Solve for x
   x = 131,018,878.43/12,931.68
6. Step 6: Final answer
   x = 10,131.62