Finding the Fourth Proportional to 12,151.84, 18,219.76 and 4,757.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,151.84 : 18,219.76 = 4,757.12 : x
2. Step 2: Convert to fraction form
   12,151.84/18,219.76 = 4,757.12/x
3. Step 3: Cross multiply
   12,151.84x = 18,219.76 × 4,757.12
4. Step 4: Simplify right side
   12,151.84x = 86,673,584.69
5. Step 5: Solve for x
   x = 86,673,584.69/12,151.84
6. Step 6: Final answer
   x = 7,132.55