Finding the Fourth Proportional to 21,499.50, 32,250.47 and 7,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.50 : 32,250.47 = 7,648.50 : x
2. Step 2: Convert to fraction form
   21,499.50/32,250.47 = 7,648.50/x
3. Step 3: Cross multiply
   21,499.50x = 32,250.47 × 7,648.50
4. Step 4: Simplify right side
   21,499.50x = 246,667,681.55
5. Step 5: Solve for x
   x = 246,667,681.55/21,499.50
6. Step 6: Final answer
   x = 11,473.18