Finding the Fourth Proportional to 25,447.50, 38,146.42 and 12,116.91

Step by Step Solution

1. Step 1: Write the proportion equation
   25,447.50 : 38,146.42 = 12,116.91 : x
2. Step 2: Convert to fraction form
   25,447.50/38,146.42 = 12,116.91/x
3. Step 3: Cross multiply
   25,447.50x = 38,146.42 × 12,116.91
4. Step 4: Simplify right side
   25,447.50x = 462,216,672.89
5. Step 5: Solve for x
   x = 462,216,672.89/25,447.50
6. Step 6: Final answer
   x = 18,163.54