Finding the Fourth Proportional to 12,131.16, 18,194.61 and 4,233.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.16 : 18,194.61 = 4,233.05 : x
2. Step 2: Convert to fraction form
   12,131.16/18,194.61 = 4,233.05/x
3. Step 3: Cross multiply
   12,131.16x = 18,194.61 × 4,233.05
4. Step 4: Simplify right side
   12,131.16x = 77,018,693.86
5. Step 5: Solve for x
   x = 77,018,693.86/12,131.16
6. Step 6: Final answer
   x = 6,348.83