Finding the Fourth Proportional to 10,012.31, 13,818.90 and 5,766.19

Step by Step Solution

1. Step 1: Write the proportion equation
   10,012.31 : 13,818.90 = 5,766.19 : x
2. Step 2: Convert to fraction form
   10,012.31/13,818.90 = 5,766.19/x
3. Step 3: Cross multiply
   10,012.31x = 13,818.90 × 5,766.19
4. Step 4: Simplify right side
   10,012.31x = 79,682,390.07
5. Step 5: Solve for x
   x = 79,682,390.07/10,012.31
6. Step 6: Final answer
   x = 7,958.44