Finding the Fourth Proportional to 12,150.72, 16,772.16 and 7,116.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,150.72 : 16,772.16 = 7,116.56 : x
2. Step 2: Convert to fraction form
   12,150.72/16,772.16 = 7,116.56/x
3. Step 3: Cross multiply
   12,150.72x = 16,772.16 × 7,116.56
4. Step 4: Simplify right side
   12,150.72x = 119,360,088.69
5. Step 5: Solve for x
   x = 119,360,088.69/12,150.72
6. Step 6: Final answer
   x = 9,823.29