Finding the Fourth Proportional to 21,655.50, 32,483.28 and 5,239.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,655.50 : 32,483.28 = 5,239.50 : x
2. Step 2: Convert to fraction form
   21,655.50/32,483.28 = 5,239.50/x
3. Step 3: Cross multiply
   21,655.50x = 32,483.28 × 5,239.50
4. Step 4: Simplify right side
   21,655.50x = 170,196,145.56
5. Step 5: Solve for x
   x = 170,196,145.56/21,655.50
6. Step 6: Final answer
   x = 7,859.26