Finding the Fourth Proportional to 9,803.89, 14,708.31 and 2,878.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,803.89 : 14,708.31 = 2,878.39 : x
2. Step 2: Convert to fraction form
   9,803.89/14,708.31 = 2,878.39/x
3. Step 3: Cross multiply
   9,803.89x = 14,708.31 × 2,878.39
4. Step 4: Simplify right side
   9,803.89x = 42,336,252.42
5. Step 5: Solve for x
   x = 42,336,252.42/9,803.89
6. Step 6: Final answer
   x = 4,318.31