Finding the Fourth Proportional to 9,870.72, 14,786.64 and 7,550.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.72 : 14,786.64 = 7,550.88 : x
2. Step 2: Convert to fraction form
   9,870.72/14,786.64 = 7,550.88/x
3. Step 3: Cross multiply
   9,870.72x = 14,786.64 × 7,550.88
4. Step 4: Simplify right side
   9,870.72x = 111,652,144.24
5. Step 5: Solve for x
   x = 111,652,144.24/9,870.72
6. Step 6: Final answer
   x = 11,311.45