Finding the Fourth Proportional to 19,074.72, 28,608.80 and 5,223.68

Step by Step Solution

1. Step 1: Write the proportion equation
   19,074.72 : 28,608.80 = 5,223.68 : x
2. Step 2: Convert to fraction form
   19,074.72/28,608.80 = 5,223.68/x
3. Step 3: Cross multiply
   19,074.72x = 28,608.80 × 5,223.68
4. Step 4: Simplify right side
   19,074.72x = 149,443,216.38
5. Step 5: Solve for x
   x = 149,443,216.38/19,074.72
6. Step 6: Final answer
   x = 7,834.62