Finding the Fourth Proportional to 20,706.41, 31,059.33 and 5,124.05

Step by Step Solution

1. Step 1: Write the proportion equation
   20,706.41 : 31,059.33 = 5,124.05 : x
2. Step 2: Convert to fraction form
   20,706.41/31,059.33 = 5,124.05/x
3. Step 3: Cross multiply
   20,706.41x = 31,059.33 × 5,124.05
4. Step 4: Simplify right side
   20,706.41x = 159,149,559.89
5. Step 5: Solve for x
   x = 159,149,559.89/20,706.41
6. Step 6: Final answer
   x = 7,686.00