Finding the Fourth Proportional to 10,971.72, 16,457.32 and 4,396.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,971.72 : 16,457.32 = 4,396.16 : x
2. Step 2: Convert to fraction form
   10,971.72/16,457.32 = 4,396.16/x
3. Step 3: Cross multiply
   10,971.72x = 16,457.32 × 4,396.16
4. Step 4: Simplify right side
   10,971.72x = 72,349,011.89
5. Step 5: Solve for x
   x = 72,349,011.89/10,971.72
6. Step 6: Final answer
   x = 6,594.14