Finding the Fourth Proportional to 20,723.16, 31,084.86 and 7,570.10

Step by Step Solution

1. Step 1: Write the proportion equation
   20,723.16 : 31,084.86 = 7,570.10 : x
2. Step 2: Convert to fraction form
   20,723.16/31,084.86 = 7,570.10/x
3. Step 3: Cross multiply
   20,723.16x = 31,084.86 × 7,570.10
4. Step 4: Simplify right side
   20,723.16x = 235,315,498.69
5. Step 5: Solve for x
   x = 235,315,498.69/20,723.16
6. Step 6: Final answer
   x = 11,355.19