Finding the Fourth Proportional to 8,272.98, 12,408.86 and 2,430.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,272.98 : 12,408.86 = 2,430.05 : x
2. Step 2: Convert to fraction form
   8,272.98/12,408.86 = 2,430.05/x
3. Step 3: Cross multiply
   8,272.98x = 12,408.86 × 2,430.05
4. Step 4: Simplify right side
   8,272.98x = 30,154,094.27
5. Step 5: Solve for x
   x = 30,154,094.27/8,272.98
6. Step 6: Final answer
   x = 3,644.89