Finding the Fourth Proportional to 25,147.60, 37,718.76 and 12,662.56

Step by Step Solution

1. Step 1: Write the proportion equation
   25,147.60 : 37,718.76 = 12,662.56 : x
2. Step 2: Convert to fraction form
   25,147.60/37,718.76 = 12,662.56/x
3. Step 3: Cross multiply
   25,147.60x = 37,718.76 × 12,662.56
4. Step 4: Simplify right side
   25,147.60x = 477,616,061.63
5. Step 5: Solve for x
   x = 477,616,061.63/25,147.60
6. Step 6: Final answer
   x = 18,992.51