Finding the Fourth Proportional to 37,340.85, 56,020.83 and 12,387.86

Step by Step Solution

1. Step 1: Write the proportion equation
   37,340.85 : 56,020.83 = 12,387.86 : x
2. Step 2: Convert to fraction form
   37,340.85/56,020.83 = 12,387.86/x
3. Step 3: Cross multiply
   37,340.85x = 56,020.83 × 12,387.86
4. Step 4: Simplify right side
   37,340.85x = 693,978,199.12
5. Step 5: Solve for x
   x = 693,978,199.12/37,340.85
6. Step 6: Final answer
   x = 18,584.96