Finding the Fourth Proportional to 20,823.75, 31,248.72 and 10,970.10

Step by Step Solution

1. Step 1: Write the proportion equation
   20,823.75 : 31,248.72 = 10,970.10 : x
2. Step 2: Convert to fraction form
   20,823.75/31,248.72 = 10,970.10/x
3. Step 3: Cross multiply
   20,823.75x = 31,248.72 × 10,970.10
4. Step 4: Simplify right side
   20,823.75x = 342,801,583.27
5. Step 5: Solve for x
   x = 342,801,583.27/20,823.75
6. Step 6: Final answer
   x = 16,462.05