Finding the Fourth Proportional to 10,196.21, 15,293.63 and 2,800.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,196.21 : 15,293.63 = 2,800.05 : x
2. Step 2: Convert to fraction form
   10,196.21/15,293.63 = 2,800.05/x
3. Step 3: Cross multiply
   10,196.21x = 15,293.63 × 2,800.05
4. Step 4: Simplify right side
   10,196.21x = 42,822,914.68
5. Step 5: Solve for x
   x = 42,822,914.68/10,196.21
6. Step 6: Final answer
   x = 4,199.89