Finding the Fourth Proportional to 10,158.40, 14,018.88 and 5,682.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,158.40 : 14,018.88 = 5,682.32 : x
2. Step 2: Convert to fraction form
   10,158.40/14,018.88 = 5,682.32/x
3. Step 3: Cross multiply
   10,158.40x = 14,018.88 × 5,682.32
4. Step 4: Simplify right side
   10,158.40x = 79,659,762.20
5. Step 5: Solve for x
   x = 79,659,762.20/10,158.40
6. Step 6: Final answer
   x = 7,841.76