Finding the Fourth Proportional to 9,401.80, 12,974.75 and 5,210.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.80 : 12,974.75 = 5,210.05 : x
2. Step 2: Convert to fraction form
   9,401.80/12,974.75 = 5,210.05/x
3. Step 3: Cross multiply
   9,401.80x = 12,974.75 × 5,210.05
4. Step 4: Simplify right side
   9,401.80x = 67,599,096.24
5. Step 5: Solve for x
   x = 67,599,096.24/9,401.80
6. Step 6: Final answer
   x = 7,190.02