Finding the Fourth Proportional to 16,798.89, 25,197.44 and 5,111.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,798.89 : 25,197.44 = 5,111.21 : x
2. Step 2: Convert to fraction form
   16,798.89/25,197.44 = 5,111.21/x
3. Step 3: Cross multiply
   16,798.89x = 25,197.44 × 5,111.21
4. Step 4: Simplify right side
   16,798.89x = 128,789,255.76
5. Step 5: Solve for x
   x = 128,789,255.76/16,798.89
6. Step 6: Final answer
   x = 7,666.53