Finding the Fourth Proportional to 16,518.87, 24,784.38 and 7,638.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,518.87 : 24,784.38 = 7,638.48 : x
2. Step 2: Convert to fraction form
   16,518.87/24,784.38 = 7,638.48/x
3. Step 3: Cross multiply
   16,518.87x = 24,784.38 × 7,638.48
4. Step 4: Simplify right side
   16,518.87x = 189,314,990.94
5. Step 5: Solve for x
   x = 189,314,990.94/16,518.87
6. Step 6: Final answer
   x = 11,460.53