Finding the Fourth Proportional to 10,663.65, 15,972.39 and 7,735.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,663.65 : 15,972.39 = 7,735.50 : x
2. Step 2: Convert to fraction form
   10,663.65/15,972.39 = 7,735.50/x
3. Step 3: Cross multiply
   10,663.65x = 15,972.39 × 7,735.50
4. Step 4: Simplify right side
   10,663.65x = 123,554,422.85
5. Step 5: Solve for x
   x = 123,554,422.85/10,663.65
6. Step 6: Final answer
   x = 11,586.50