Finding the Fourth Proportional to 8,328.83, 12,492.78 and 2,781.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,328.83 : 12,492.78 = 2,781.59 : x
2. Step 2: Convert to fraction form
   8,328.83/12,492.78 = 2,781.59/x
3. Step 3: Cross multiply
   8,328.83x = 12,492.78 × 2,781.59
4. Step 4: Simplify right side
   8,328.83x = 34,749,804.94
5. Step 5: Solve for x
   x = 34,749,804.94/8,328.83
6. Step 6: Final answer
   x = 4,172.23