Finding the Fourth Proportional to 13,276.56, 19,916.89 and 4,509.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,276.56 : 19,916.89 = 4,509.42 : x
2. Step 2: Convert to fraction form
   13,276.56/19,916.89 = 4,509.42/x
3. Step 3: Cross multiply
   13,276.56x = 19,916.89 × 4,509.42
4. Step 4: Simplify right side
   13,276.56x = 89,813,648.17
5. Step 5: Solve for x
   x = 89,813,648.17/13,276.56
6. Step 6: Final answer
   x = 6,764.83