Finding the Fourth Proportional to 37,155.48, 55,721.52 and 12,189.71

Step by Step Solution

1. Step 1: Write the proportion equation
   37,155.48 : 55,721.52 = 12,189.71 : x
2. Step 2: Convert to fraction form
   37,155.48/55,721.52 = 12,189.71/x
3. Step 3: Cross multiply
   37,155.48x = 55,721.52 × 12,189.71
4. Step 4: Simplify right side
   37,155.48x = 679,229,108.61
5. Step 5: Solve for x
   x = 679,229,108.61/37,155.48
6. Step 6: Final answer
   x = 18,280.72