Finding the Fourth Proportional to 10,875.48, 16,311.06 and 3,947.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,875.48 : 16,311.06 = 3,947.64 : x
2. Step 2: Convert to fraction form
   10,875.48/16,311.06 = 3,947.64/x
3. Step 3: Cross multiply
   10,875.48x = 16,311.06 × 3,947.64
4. Step 4: Simplify right side
   10,875.48x = 64,390,192.90
5. Step 5: Solve for x
   x = 64,390,192.90/10,875.48
6. Step 6: Final answer
   x = 5,920.68