Finding the Fourth Proportional to 7,158.56, 9,878.72 and 4,014.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,158.56 : 9,878.72 = 4,014.72 : x
2. Step 2: Convert to fraction form
   7,158.56/9,878.72 = 4,014.72/x
3. Step 3: Cross multiply
   7,158.56x = 9,878.72 × 4,014.72
4. Step 4: Simplify right side
   7,158.56x = 39,660,294.76
5. Step 5: Solve for x
   x = 39,660,294.76/7,158.56
6. Step 6: Final answer
   x = 5,540.26