Finding the Fourth Proportional to 21,510.50, 32,266.97 and 7,659.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,510.50 : 32,266.97 = 7,659.50 : x
2. Step 2: Convert to fraction form
   21,510.50/32,266.97 = 7,659.50/x
3. Step 3: Cross multiply
   21,510.50x = 32,266.97 × 7,659.50
4. Step 4: Simplify right side
   21,510.50x = 247,148,818.42
5. Step 5: Solve for x
   x = 247,148,818.42/21,510.50
6. Step 6: Final answer
   x = 11,489.68