Finding the Fourth Proportional to 19,965.69, 29,925.25 and 15,019.43

Step by Step Solution

1. Step 1: Write the proportion equation
   19,965.69 : 29,925.25 = 15,019.43 : x
2. Step 2: Convert to fraction form
   19,965.69/29,925.25 = 15,019.43/x
3. Step 3: Cross multiply
   19,965.69x = 29,925.25 × 15,019.43
4. Step 4: Simplify right side
   19,965.69x = 449,460,010.43
5. Step 5: Solve for x
   x = 449,460,010.43/19,965.69
6. Step 6: Final answer
   x = 22,511.62