Finding the Fourth Proportional to 10,743.80, 16,118.42 and 5,199.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,743.80 : 16,118.42 = 5,199.80 : x
2. Step 2: Convert to fraction form
   10,743.80/16,118.42 = 5,199.80/x
3. Step 3: Cross multiply
   10,743.80x = 16,118.42 × 5,199.80
4. Step 4: Simplify right side
   10,743.80x = 83,812,560.32
5. Step 5: Solve for x
   x = 83,812,560.32/10,743.80
6. Step 6: Final answer
   x = 7,801.02