Finding the Fourth Proportional to 13,155.41, 19,732.83 and 4,270.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,155.41 : 19,732.83 = 4,270.72 : x
2. Step 2: Convert to fraction form
   13,155.41/19,732.83 = 4,270.72/x
3. Step 3: Cross multiply
   13,155.41x = 19,732.83 × 4,270.72
4. Step 4: Simplify right side
   13,155.41x = 84,273,436.91
5. Step 5: Solve for x
   x = 84,273,436.91/13,155.41
6. Step 6: Final answer
   x = 6,405.99