Finding the Fourth Proportional to 10,520.42, 14,518.18 and 5,740.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,520.42 : 14,518.18 = 5,740.37 : x
2. Step 2: Convert to fraction form
   10,520.42/14,518.18 = 5,740.37/x
3. Step 3: Cross multiply
   10,520.42x = 14,518.18 × 5,740.37
4. Step 4: Simplify right side
   10,520.42x = 83,339,713.95
5. Step 5: Solve for x
   x = 83,339,713.95/10,520.42
6. Step 6: Final answer
   x = 7,921.71