Finding the Fourth Proportional to 12,730.16, 19,086.44 and 5,233.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,730.16 : 19,086.44 = 5,233.61 : x
2. Step 2: Convert to fraction form
   12,730.16/19,086.44 = 5,233.61/x
3. Step 3: Cross multiply
   12,730.16x = 19,086.44 × 5,233.61
4. Step 4: Simplify right side
   12,730.16x = 99,891,004.80
5. Step 5: Solve for x
   x = 99,891,004.80/12,730.16
6. Step 6: Final answer
   x = 7,846.80