Finding the Fourth Proportional to 17,588.49, 26,388.89 and 7,728.54

Step by Step Solution

1. Step 1: Write the proportion equation
   17,588.49 : 26,388.89 = 7,728.54 : x
2. Step 2: Convert to fraction form
   17,588.49/26,388.89 = 7,728.54/x
3. Step 3: Cross multiply
   17,588.49x = 26,388.89 × 7,728.54
4. Step 4: Simplify right side
   17,588.49x = 203,947,557.52
5. Step 5: Solve for x
   x = 203,947,557.52/17,588.49
6. Step 6: Final answer
   x = 11,595.51