Finding the Fourth Proportional to 40,390.86, 60,595 and 12,310.18

Step by Step Solution

1. Step 1: Write the proportion equation
   40,390.86 : 60,595 = 12,310.18 : x
2. Step 2: Convert to fraction form
   40,390.86/60,595 = 12,310.18/x
3. Step 3: Cross multiply
   40,390.86x = 60,595 × 12,310.18
4. Step 4: Simplify right side
   40,390.86x = 745,935,357.10
5. Step 5: Solve for x
   x = 745,935,357.10/40,390.86
6. Step 6: Final answer
   x = 18,467.92