Finding the Fourth Proportional to 21,500.80, 32,248.78 and 7,458.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,500.80 : 32,248.78 = 7,458.24 : x
2. Step 2: Convert to fraction form
   21,500.80/32,248.78 = 7,458.24/x
3. Step 3: Cross multiply
   21,500.80x = 32,248.78 × 7,458.24
4. Step 4: Simplify right side
   21,500.80x = 240,519,140.95
5. Step 5: Solve for x
   x = 240,519,140.95/21,500.80
6. Step 6: Final answer
   x = 11,186.52