Finding the Fourth Proportional to 10,290.27, 15,436.31 and 2,894.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.27 : 15,436.31 = 2,894.79 : x
2. Step 2: Convert to fraction form
   10,290.27/15,436.31 = 2,894.79/x
3. Step 3: Cross multiply
   10,290.27x = 15,436.31 × 2,894.79
4. Step 4: Simplify right side
   10,290.27x = 44,684,875.82
5. Step 5: Solve for x
   x = 44,684,875.82/10,290.27
6. Step 6: Final answer
   x = 4,342.44