Finding the Fourth Proportional to 8,755.16, 13,141.12 and 3,213.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,755.16 : 13,141.12 = 3,213.86 : x
2. Step 2: Convert to fraction form
   8,755.16/13,141.12 = 3,213.86/x
3. Step 3: Cross multiply
   8,755.16x = 13,141.12 × 3,213.86
4. Step 4: Simplify right side
   8,755.16x = 42,233,719.92
5. Step 5: Solve for x
   x = 42,233,719.92/8,755.16
6. Step 6: Final answer
   x = 4,823.87