Finding the Fourth Proportional to 13,176.72, 19,764.81 and 3,316.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,176.72 : 19,764.81 = 3,316.05 : x
2. Step 2: Convert to fraction form
   13,176.72/19,764.81 = 3,316.05/x
3. Step 3: Cross multiply
   13,176.72x = 19,764.81 × 3,316.05
4. Step 4: Simplify right side
   13,176.72x = 65,541,098.20
5. Step 5: Solve for x
   x = 65,541,098.20/13,176.72
6. Step 6: Final answer
   x = 4,974.01