Finding the Fourth Proportional to 20,875.72, 31,314.68 and 5,293.48

Step by Step Solution

1. Step 1: Write the proportion equation
   20,875.72 : 31,314.68 = 5,293.48 : x
2. Step 2: Convert to fraction form
   20,875.72/31,314.68 = 5,293.48/x
3. Step 3: Cross multiply
   20,875.72x = 31,314.68 × 5,293.48
4. Step 4: Simplify right side
   20,875.72x = 165,763,632.29
5. Step 5: Solve for x
   x = 165,763,632.29/20,875.72
6. Step 6: Final answer
   x = 7,940.50