Finding the Fourth Proportional to 19,773.56, 29,660.72 and 9,240.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,773.56 : 29,660.72 = 9,240.69 : x
2. Step 2: Convert to fraction form
   19,773.56/29,660.72 = 9,240.69/x
3. Step 3: Cross multiply
   19,773.56x = 29,660.72 × 9,240.69
4. Step 4: Simplify right side
   19,773.56x = 274,085,583.72
5. Step 5: Solve for x
   x = 274,085,583.72/19,773.56
6. Step 6: Final answer
   x = 13,861.21