Finding the Fourth Proportional to 9,401.55, 12,973.68 and 5,422.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.55 : 12,973.68 = 5,422.74 : x
2. Step 2: Convert to fraction form
   9,401.55/12,973.68 = 5,422.74/x
3. Step 3: Cross multiply
   9,401.55x = 12,973.68 × 5,422.74
4. Step 4: Simplify right side
   9,401.55x = 70,352,893.48
5. Step 5: Solve for x
   x = 70,352,893.48/9,401.55
6. Step 6: Final answer
   x = 7,483.12