Finding the Fourth Proportional to 10,518.15, 14,515.10 and 5,738.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,518.15 : 14,515.10 = 5,738.21 : x
2. Step 2: Convert to fraction form
   10,518.15/14,515.10 = 5,738.21/x
3. Step 3: Cross multiply
   10,518.15x = 14,515.10 × 5,738.21
4. Step 4: Simplify right side
   10,518.15x = 83,290,666.65
5. Step 5: Solve for x
   x = 83,290,666.65/10,518.15
6. Step 6: Final answer
   x = 7,918.75