Finding the Fourth Proportional to 18,153.12, 27,180.72 and 12,594.72

Step by Step Solution

1. Step 1: Write the proportion equation
   18,153.12 : 27,180.72 = 12,594.72 : x
2. Step 2: Convert to fraction form
   18,153.12/27,180.72 = 12,594.72/x
3. Step 3: Cross multiply
   18,153.12x = 27,180.72 × 12,594.72
4. Step 4: Simplify right side
   18,153.12x = 342,333,557.80
5. Step 5: Solve for x
   x = 342,333,557.80/18,153.12
6. Step 6: Final answer
   x = 18,858.11