Finding the Fourth Proportional to 28,465.98, 42,697.28 and 8,744.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,465.98 : 42,697.28 = 8,744.72 : x
2. Step 2: Convert to fraction form
   28,465.98/42,697.28 = 8,744.72/x
3. Step 3: Cross multiply
   28,465.98x = 42,697.28 × 8,744.72
4. Step 4: Simplify right side
   28,465.98x = 373,375,758.36
5. Step 5: Solve for x
   x = 373,375,758.36/28,465.98
6. Step 6: Final answer
   x = 13,116.56