Finding the Fourth Proportional to 9,890.15, 14,832.88 and 2,868.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890.15 : 14,832.88 = 2,868.31 : x
2. Step 2: Convert to fraction form
   9,890.15/14,832.88 = 2,868.31/x
3. Step 3: Cross multiply
   9,890.15x = 14,832.88 × 2,868.31
4. Step 4: Simplify right side
   9,890.15x = 42,545,298.03
5. Step 5: Solve for x
   x = 42,545,298.03/9,890.15
6. Step 6: Final answer
   x = 4,301.78