Finding the Fourth Proportional to 13,276.71, 19,916.89 and 4,509.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,276.71 : 19,916.89 = 4,509.27 : x
2. Step 2: Convert to fraction form
   13,276.71/19,916.89 = 4,509.27/x
3. Step 3: Cross multiply
   13,276.71x = 19,916.89 × 4,509.27
4. Step 4: Simplify right side
   13,276.71x = 89,810,623.30
5. Step 5: Solve for x
   x = 89,810,623.30/13,276.71
6. Step 6: Final answer
   x = 6,764.52