Finding the Fourth Proportional to 12,838.27, 17,716.63 and 7,173.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,838.27 : 17,716.63 = 7,173.13 : x
2. Step 2: Convert to fraction form
   12,838.27/17,716.63 = 7,173.13/x
3. Step 3: Cross multiply
   12,838.27x = 17,716.63 × 7,173.13
4. Step 4: Simplify right side
   12,838.27x = 127,083,690.15
5. Step 5: Solve for x
   x = 127,083,690.15/12,838.27
6. Step 6: Final answer
   x = 9,898.82