Finding the Fourth Proportional to 27,445.72, 41,180.89 and 12,646.72

Step by Step Solution

1. Step 1: Write the proportion equation
   27,445.72 : 41,180.89 = 12,646.72 : x
2. Step 2: Convert to fraction form
   27,445.72/41,180.89 = 12,646.72/x
3. Step 3: Cross multiply
   27,445.72x = 41,180.89 × 12,646.72
4. Step 4: Simplify right side
   27,445.72x = 520,803,185.18
5. Step 5: Solve for x
   x = 520,803,185.18/27,445.72
6. Step 6: Final answer
   x = 18,975.75