Finding the Fourth Proportional to 8,131.69, 12,199.23 and 4,623.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.69 : 12,199.23 = 4,623.31 : x
2. Step 2: Convert to fraction form
   8,131.69/12,199.23 = 4,623.31/x
3. Step 3: Cross multiply
   8,131.69x = 12,199.23 × 4,623.31
4. Step 4: Simplify right side
   8,131.69x = 56,400,822.05
5. Step 5: Solve for x
   x = 56,400,822.05/8,131.69
6. Step 6: Final answer
   x = 6,935.93