Finding the Fourth Proportional to 9,172.82, 12,657.24 and 5,393.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.82 : 12,657.24 = 5,393.76 : x
2. Step 2: Convert to fraction form
   9,172.82/12,657.24 = 5,393.76/x
3. Step 3: Cross multiply
   9,172.82x = 12,657.24 × 5,393.76
4. Step 4: Simplify right side
   9,172.82x = 68,270,114.82
5. Step 5: Solve for x
   x = 68,270,114.82/9,172.82
6. Step 6: Final answer
   x = 7,442.66