Finding the Fourth Proportional to 9,172.82, 12,659.28 and 5,194.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.82 : 12,659.28 = 5,194.46 : x
2. Step 2: Convert to fraction form
   9,172.82/12,659.28 = 5,194.46/x
3. Step 3: Cross multiply
   9,172.82x = 12,659.28 × 5,194.46
4. Step 4: Simplify right side
   9,172.82x = 65,758,123.59
5. Step 5: Solve for x
   x = 65,758,123.59/9,172.82
6. Step 6: Final answer
   x = 7,168.80