Finding the Fourth Proportional to 12,484.89, 18,729.15 and 5,089.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,484.89 : 18,729.15 = 5,089.80 : x
2. Step 2: Convert to fraction form
   12,484.89/18,729.15 = 5,089.80/x
3. Step 3: Cross multiply
   12,484.89x = 18,729.15 × 5,089.80
4. Step 4: Simplify right side
   12,484.89x = 95,327,627.67
5. Step 5: Solve for x
   x = 95,327,627.67/12,484.89
6. Step 6: Final answer
   x = 7,635.44