Finding the Fourth Proportional to 10,025.60, 14,942.72 and 8,986.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,025.60 : 14,942.72 = 8,986.72 : x
2. Step 2: Convert to fraction form
   10,025.60/14,942.72 = 8,986.72/x
3. Step 3: Cross multiply
   10,025.60x = 14,942.72 × 8,986.72
4. Step 4: Simplify right side
   10,025.60x = 134,286,040.68
5. Step 5: Solve for x
   x = 134,286,040.68/10,025.60
6. Step 6: Final answer
   x = 13,394.31