Finding the Fourth Proportional to 8,993.94, 12,411.68 and 5,015.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,993.94 : 12,411.68 = 5,015.31 : x
2. Step 2: Convert to fraction form
   8,993.94/12,411.68 = 5,015.31/x
3. Step 3: Cross multiply
   8,993.94x = 12,411.68 × 5,015.31
4. Step 4: Simplify right side
   8,993.94x = 62,248,422.82
5. Step 5: Solve for x
   x = 62,248,422.82/8,993.94
6. Step 6: Final answer
   x = 6,921.15