Finding the Fourth Proportional to 9,401.88, 12,971.64 and 5,422.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.88 : 12,971.64 = 5,422.48 : x
2. Step 2: Convert to fraction form
   9,401.88/12,971.64 = 5,422.48/x
3. Step 3: Cross multiply
   9,401.88x = 12,971.64 × 5,422.48
4. Step 4: Simplify right side
   9,401.88x = 70,338,458.47
5. Step 5: Solve for x
   x = 70,338,458.47/9,401.88
6. Step 6: Final answer
   x = 7,481.32