Finding the Fourth Proportional to 9,401.72, 12,974.88 and 5,210

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.72 : 12,974.88 = 5,210 : x
2. Step 2: Convert to fraction form
   9,401.72/12,974.88 = 5,210/x
3. Step 3: Cross multiply
   9,401.72x = 12,974.88 × 5,210
4. Step 4: Simplify right side
   9,401.72x = 67,599,124.80
5. Step 5: Solve for x
   x = 67,599,124.80/9,401.72
6. Step 6: Final answer
   x = 7,190.08