Finding the Fourth Proportional to 9,401.84, 12,975.90 and 5,422.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.84 : 12,975.90 = 5,422.16 : x
2. Step 2: Convert to fraction form
   9,401.84/12,975.90 = 5,422.16/x
3. Step 3: Cross multiply
   9,401.84x = 12,975.90 × 5,422.16
4. Step 4: Simplify right side
   9,401.84x = 70,357,405.94
5. Step 5: Solve for x
   x = 70,357,405.94/9,401.84
6. Step 6: Final answer
   x = 7,483.37