Finding the Fourth Proportional to 20,635.56, 30,951.72 and 7,490.88

Step by Step Solution

1. Step 1: Write the proportion equation
   20,635.56 : 30,951.72 = 7,490.88 : x
2. Step 2: Convert to fraction form
   20,635.56/30,951.72 = 7,490.88/x
3. Step 3: Cross multiply
   20,635.56x = 30,951.72 × 7,490.88
4. Step 4: Simplify right side
   20,635.56x = 231,855,620.31
5. Step 5: Solve for x
   x = 231,855,620.31/20,635.56
6. Step 6: Final answer
   x = 11,235.73