Finding the Fourth Proportional to 28,404.24, 42,625.32 and 9,936.24

Step by Step Solution

1. Step 1: Write the proportion equation
   28,404.24 : 42,625.32 = 9,936.24 : x
2. Step 2: Convert to fraction form
   28,404.24/42,625.32 = 9,936.24/x
3. Step 3: Cross multiply
   28,404.24x = 42,625.32 × 9,936.24
4. Step 4: Simplify right side
   28,404.24x = 423,535,409.60
5. Step 5: Solve for x
   x = 423,535,409.60/28,404.24
6. Step 6: Final answer
   x = 14,910.99