Finding the Fourth Proportional to 37,721.42, 56,589.03 and 12,422.37

Step by Step Solution

1. Step 1: Write the proportion equation
   37,721.42 : 56,589.03 = 12,422.37 : x
2. Step 2: Convert to fraction form
   37,721.42/56,589.03 = 12,422.37/x
3. Step 3: Cross multiply
   37,721.42x = 56,589.03 × 12,422.37
4. Step 4: Simplify right side
   37,721.42x = 702,969,868.60
5. Step 5: Solve for x
   x = 702,969,868.60/37,721.42
6. Step 6: Final answer
   x = 18,635.83