Finding the Fourth Proportional to 10,698.72, 16,045.32 and 3,200.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,698.72 : 16,045.32 = 3,200.80 : x
2. Step 2: Convert to fraction form
   10,698.72/16,045.32 = 3,200.80/x
3. Step 3: Cross multiply
   10,698.72x = 16,045.32 × 3,200.80
4. Step 4: Simplify right side
   10,698.72x = 51,357,860.26
5. Step 5: Solve for x
   x = 51,357,860.26/10,698.72
6. Step 6: Final answer
   x = 4,800.37