Finding the Fourth Proportional to 10,812.72, 16,201.17 and 4,956.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,812.72 : 16,201.17 = 4,956.42 : x
2. Step 2: Convert to fraction form
   10,812.72/16,201.17 = 4,956.42/x
3. Step 3: Cross multiply
   10,812.72x = 16,201.17 × 4,956.42
4. Step 4: Simplify right side
   10,812.72x = 80,299,803.01
5. Step 5: Solve for x
   x = 80,299,803.01/10,812.72
6. Step 6: Final answer
   x = 7,426.42