Finding the Fourth Proportional to 16,798.53, 25,200.51 and 5,109

Step by Step Solution

1. Step 1: Write the proportion equation
   16,798.53 : 25,200.51 = 5,109 : x
2. Step 2: Convert to fraction form
   16,798.53/25,200.51 = 5,109/x
3. Step 3: Cross multiply
   16,798.53x = 25,200.51 × 5,109
4. Step 4: Simplify right side
   16,798.53x = 128,749,405.59
5. Step 5: Solve for x
   x = 128,749,405.59/16,798.53
6. Step 6: Final answer
   x = 7,664.33