Finding the Fourth Proportional to 10,530.36, 15,762.42 and 7,224.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,530.36 : 15,762.42 = 7,224.12 : x
2. Step 2: Convert to fraction form
   10,530.36/15,762.42 = 7,224.12/x
3. Step 3: Cross multiply
   10,530.36x = 15,762.42 × 7,224.12
4. Step 4: Simplify right side
   10,530.36x = 113,869,613.57
5. Step 5: Solve for x
   x = 113,869,613.57/10,530.36
6. Step 6: Final answer
   x = 10,813.46