Finding the Fourth Proportional to 19,200.42, 28,780.38 and 7,184.34

Step by Step Solution

1. Step 1: Write the proportion equation
   19,200.42 : 28,780.38 = 7,184.34 : x
2. Step 2: Convert to fraction form
   19,200.42/28,780.38 = 7,184.34/x
3. Step 3: Cross multiply
   19,200.42x = 28,780.38 × 7,184.34
4. Step 4: Simplify right side
   19,200.42x = 206,768,035.25
5. Step 5: Solve for x
   x = 206,768,035.25/19,200.42
6. Step 6: Final answer
   x = 10,768.93