Finding the Fourth Proportional to 10,480.62, 14,469.72 and 7,212.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,480.62 : 14,469.72 = 7,212.00 : x
2. Step 2: Convert to fraction form
   10,480.62/14,469.72 = 7,212.00/x
3. Step 3: Cross multiply
   10,480.62x = 14,469.72 × 7,212.00
4. Step 4: Simplify right side
   10,480.62x = 104,355,688.42
5. Step 5: Solve for x
   x = 104,355,688.42/10,480.62
6. Step 6: Final answer
   x = 9,957.01