Finding the Fourth Proportional to 8,872.72, 12,242.12 and 5,146

Step by Step Solution

1. Step 1: Write the proportion equation
   8,872.72 : 12,242.12 = 5,146 : x
2. Step 2: Convert to fraction form
   8,872.72/12,242.12 = 5,146/x
3. Step 3: Cross multiply
   8,872.72x = 12,242.12 × 5,146
4. Step 4: Simplify right side
   8,872.72x = 62,997,949.52
5. Step 5: Solve for x
   x = 62,997,949.52/8,872.72
6. Step 6: Final answer
   x = 7,100.18