Finding the Fourth Proportional to 19,642.50, 29,469.15 and 5,791.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,642.50 : 29,469.15 = 5,791.50 : x
2. Step 2: Convert to fraction form
   19,642.50/29,469.15 = 5,791.50/x
3. Step 3: Cross multiply
   19,642.50x = 29,469.15 × 5,791.50
4. Step 4: Simplify right side
   19,642.50x = 170,670,582.23
5. Step 5: Solve for x
   x = 170,670,582.23/19,642.50
6. Step 6: Final answer
   x = 8,688.84