Finding the Fourth Proportional to 10,204.88, 15,305.52 and 2,807.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,204.88 : 15,305.52 = 2,807.55 : x
2. Step 2: Convert to fraction form
   10,204.88/15,305.52 = 2,807.55/x
3. Step 3: Cross multiply
   10,204.88x = 15,305.52 × 2,807.55
4. Step 4: Simplify right side
   10,204.88x = 42,971,012.68
5. Step 5: Solve for x
   x = 42,971,012.68/10,204.88
6. Step 6: Final answer
   x = 4,210.83