Finding the Fourth Proportional to 10,126.56, 13,978.50 and 8,704.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,126.56 : 13,978.50 = 8,704.62 : x
2. Step 2: Convert to fraction form
   10,126.56/13,978.50 = 8,704.62/x
3. Step 3: Cross multiply
   10,126.56x = 13,978.50 × 8,704.62
4. Step 4: Simplify right side
   10,126.56x = 121,677,530.67
5. Step 5: Solve for x
   x = 121,677,530.67/10,126.56
6. Step 6: Final answer
   x = 12,015.68