Finding the Fourth Proportional to 36,082.18, 54,109.43 and 12,385.31

Step by Step Solution

1. Step 1: Write the proportion equation
   36,082.18 : 54,109.43 = 12,385.31 : x
2. Step 2: Convert to fraction form
   36,082.18/54,109.43 = 12,385.31/x
3. Step 3: Cross multiply
   36,082.18x = 54,109.43 × 12,385.31
4. Step 4: Simplify right side
   36,082.18x = 670,161,867.27
5. Step 5: Solve for x
   x = 670,161,867.27/36,082.18
6. Step 6: Final answer
   x = 18,573.21