Finding the Fourth Proportional to 12,931.26, 19,398.72 and 4,168.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931.26 : 19,398.72 = 4,168.14 : x
2. Step 2: Convert to fraction form
   12,931.26/19,398.72 = 4,168.14/x
3. Step 3: Cross multiply
   12,931.26x = 19,398.72 × 4,168.14
4. Step 4: Simplify right side
   12,931.26x = 80,856,580.78
5. Step 5: Solve for x
   x = 80,856,580.78/12,931.26
6. Step 6: Final answer
   x = 6,252.80