Finding the Fourth Proportional to 8,101.50, 12,131.37 and 4,816.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,101.50 : 12,131.37 = 4,816.86 : x
2. Step 2: Convert to fraction form
   8,101.50/12,131.37 = 4,816.86/x
3. Step 3: Cross multiply
   8,101.50x = 12,131.37 × 4,816.86
4. Step 4: Simplify right side
   8,101.50x = 58,435,110.90
5. Step 5: Solve for x
   x = 58,435,110.90/8,101.50
6. Step 6: Final answer
   x = 7,212.88