Finding the Fourth Proportional to 10,905.72, 16,368.80 and 5,363.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,905.72 : 16,368.80 = 5,363.06 : x
2. Step 2: Convert to fraction form
   10,905.72/16,368.80 = 5,363.06/x
3. Step 3: Cross multiply
   10,905.72x = 16,368.80 × 5,363.06
4. Step 4: Simplify right side
   10,905.72x = 87,786,856.53
5. Step 5: Solve for x
   x = 87,786,856.53/10,905.72
6. Step 6: Final answer
   x = 8,049.62