Finding the Fourth Proportional to 10,205.15, 15,308.01 and 2,809.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,205.15 : 15,308.01 = 2,809.71 : x
2. Step 2: Convert to fraction form
   10,205.15/15,308.01 = 2,809.71/x
3. Step 3: Cross multiply
   10,205.15x = 15,308.01 × 2,809.71
4. Step 4: Simplify right side
   10,205.15x = 43,011,068.78
5. Step 5: Solve for x
   x = 43,011,068.78/10,205.15
6. Step 6: Final answer
   x = 4,214.65