Finding the Fourth Proportional to 19,091.53, 28,648.46 and 7,997.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,091.53 : 28,648.46 = 7,997.28 : x
2. Step 2: Convert to fraction form
   19,091.53/28,648.46 = 7,997.28/x
3. Step 3: Cross multiply
   19,091.53x = 28,648.46 × 7,997.28
4. Step 4: Simplify right side
   19,091.53x = 229,109,756.19
5. Step 5: Solve for x
   x = 229,109,756.19/19,091.53
6. Step 6: Final answer
   x = 12,000.60